Illustrated and descriptive catalogue of physical apparatus
- Première image
- PAGE DE TITRE
- SECTIONAL INDEX
- ELEMENTARY SCIENCE. MEASUREMENT OF LENGTH, AREA, VOLUME, CAPACITY, MASS, DENSITY, ETC
- MISCELLANEOUS LABORATORY APPARATUS. GLASSWARE, STANDS, CLAMPS, BURNERS, TOOLS, ETC
- MATHEMATICAL INSTRUMENTS
- BALANCES AND WEIGHTS
- MICROSCOPES (See also CHEMICAL APPARATUS CATALOGUE)
- METEOROLOGY
- MECHANICS : PRACTICAL AND APPLIED. HYDROSTATICS, PNEUMATICS, STEAM AND THE STEAM ENGINE
- SURVEYING AND PHYSICAL GEOGRAPHY
- MAGNETISM AND ELECTRICITY. BATTERIES AND STORAGE CELLS, TERMINALS, WIRES, GALVANOMETERS, RESISTANCES, WIRELESS APPARATUS, X-RAYS, VACUUM TUBES, ETC
- SOUND
- LIGHT. MIRRORS, LENSES, PRISMS, SPECTROMETERS, TELESCOPES, CAMERAS, LANTERNS, CINEMATOGRAPHS, ETC
- HEAT
- LANTERN SLIDES. GANOT'S PHYSICS, MAGNETISM AND ELECTRICITY, MECHANICS, HEAT, LIGHT, ASTRONOMY, BOTANY, ETC
- DETAILED INDEX
- Absoptiometer, Bunsen's
- Absorption of Heat, Apparatus for experiments on
- Accumulator Charging Sets
- Accumulator Hydrometers
- Accumulators
- Acetylene Generators and Jets
- Achromatic Prisms
- Acme Portable Cinematograph Projector
- Acoustic Bellows
- Acoustic Radiometers
- Action of Electricity on Points, Apparatus
- Action of Wire Gauze on Flame Apparatus
- Adapters, Horizontal
- Adapters, Vertical
- Adapters, Plug
- Adhesion Plates
- Adjustable Resistances (Slate Types)
- Adjustable Resistances (Tubular Types)
- Adjustable Resistances (Ventilated Patterns)
- Adjustable Slits for Optical Bench Experiments
- Adjustable Spark Gap
- Aerial Insulators
- Aerial Wire
- Air-bulb Tubes, Jolly's
- Air-bulb Tubes, Jolly's
- Air Concussion Apparatus
- Air, Expansion of, Apparatus
- Air Liquefying Apparatus
- Air, Liquid
- Air Pump Apparatus
- Air Pump Plates
- Air Pump Plates
- Air Pump Plates,
- Air Pumps
- Air Thermometers, Differential
- Air Thermometer, Model
- Air Thermometer, Shakespeare's
- Airtite
- Airy's Double Pendulum
- Aluminium Cubes
- Aluminium Cups for Determination of Dew Point
- Aluminium Cylinders
- Aluminium Foil
- Aluminium Leaf
- Aluminium Pulleys
- Aluminium Spheres
- Amalgam, Electric
- Amber Globes
- Amber Specimens
- Ammeter and Voltmeter Combined
- Ammeters and Voltmeters Combined, Watch Type
- Ammeters
- Ampère's Induced Currents Apparatus
- Ampère's Law, Apparatus for Proving
- Ampère's Parallelogram
- Amplifiers, Power (for wireless)
- Amplion Loud Speaker
- Amsler's Planimeter
- Analysis of Sound Apparatus
- Andrew's Apparatus for Determining the Isothermals of Carbon Dioxide
- Andrew's Calorifer
- Anemometers
- Aneroid Barometers, Carved Wood Frame
- Aneroids, Watch form
- Anglemeters
- Angular Mirrors
- Anode Ray Tubes
- Anode Resistances (for wireless)
- Anschütz Normal Thermometers
- Antimony and Bismuth Thermopiles
- Antimony and Bismuth Thermopiles
- Antimony and Bismuth Bars
- Antimony, Bismuth and Nickel Bars, set of 3
- Aperiodic Coils for d'Arsonval Galvanometers
- Aphengescope
- Apparatus for showing Volume and Temperature of Gas
- Apple Cutter
- Aprons, Lead Rubber
- Arago's Apparatus for illustrating Induced Currents
- Arc Lamps
- Arc Lamp Carbons
- Arc Lamp Carbons
- Arc Lamp Resistances
- Arc Lamps, Electric
- Arch, Model of
- Archimedean Drill
- Archimede's Experiment, Apparatus for
- Area of a Sphere Apparatus
- Armature Motor
- Aron's Tubes
- Arresters, Lightning
- Artificial Light Enlargers
- Assorted Spectacle Lenses
- Astatic Galvanometer, Thomson's
- Astatic Galvanometers
- Astatic Galvanometers
- Astatic Galvanometers for use with Thermopiles
- Astatic Pair
- Atmospheric Engine, Wollaston's
- Astronomical and Terrestrial Telescopes
- Astronomical and Terrestrial Telescopes
- Astronomical Slides (Rackwork Motion)
- Astronomical Telescope, Model of
- Atwood's Machines
- Auto-collimating Spectrometer
- Auto-Magnetic Jet
- Ayrton-Mather's Universal Shunt
- Ayrton's Gold Leaf Electroscope
- Azimuth Compass Box
- Balances and Weights
- Balances, Ballistic
- Balances, Compression
- Balances, Coulomb's Torsion
- Balances, Magnetic, Hibbert's
- Balances, Physical, for Experiments in Mechanics
- Balances, Specific Gravity, Joly's
- Balances, Spring
- Balance Hydrometer, Bucknell's
- Balance Lever and Moments Apparatus
- Balancing Machine
- Ball and Ring for showing Expansion of Solids
- Ball and Ring for use with Whirling Tables
- Ball-ended Magnets, Robison's
- Ball, Glass, Rotating (Electrical Circus)
- Ball, Glass, Rotating, for Air Pump Work
- Ball with Weight for use with Whirling Tables
- Ballistic Balances
- Ballistic Coils for d'Arsonval Galvanometers
- Balls, Brass, for Statical Electricity Apparatus
- Balls, Brass, for use with Whirling Tables
- Balls, Copper, for Heat Experiments
- Balls, Lead, making simple Pendulums
- Balls, Pith
- Balmain's Luminous Paint
- Bands, India Rubber
- Bar and Gauge to show Expansion
- Bar Breaking Apparatus
- Bark Corks and Shives
- Barker's Mill
- Barlow Lens for Telescopes
- Barlow's Wheel
- Bar Magnets, Cylindrical
- Bar Magnets in Sets
- Bar Magnets on Stand
- Bar Magnets, Various
- Bar Magnets, Telephone
- Bar of Iron and Copper to show different Conducting Power
- Barographs and Thermographs
- Barometer Tubes
- Barometer Tubes, fitted with Brass Cap and Stuffing Box
- Barometer Tubes
- Barometer Tubing
- Barometer Vernier, Model
- Barometers, Aneroid, Carved Wood Frame
- Barometers, Fortin's
- Barometers, Various
- Baroscope for showing Buoyancy of Air
- Baro-Thermograph
- Bars of Antimony, Bismuth and Nickel
- Bars of Bismuth and Antimony
- Bars of Brass and Iron for expansion of Solids Experiments
- Bars of Soft Iron
- Bars of Steel, Unmagnetised
- Bars, Wooden, for Sound Experiments
- Bar Weights, Iron
- Baseboard Mounting (X-Ray Apparatus)
- Basins, Porcelain
- Basket Inductances
- Bass Bows
- Bass Bows
- Batswing Burners
- Battery Cells for Bunsen's Batteries
- Battery Cells, Porous Ware
- Battery Switches, Plug Key
- Battery Terminals
- Battery Wall Telephones
- Batteries (Accumulators)
- Batteries, Bichromate
- Batteries, Daniell's, Bunsen's Leclanché
- Batteries, Floating
- Batteries complete with Tray and Lifting Arrangements
- Batteries, Groves'
- Batteries, High Tension
- Batteries of Leyden Jars
- Batteries, Spare parts for
- Beakers, Enamelled Steel
- Beakers, Glass
- Beakers, Thick Glass for Cold Solutions
- Beakers, Zinc
- Beam Compasses
- Beams and Springs, Testing Apparatus for
- Beckmann's Boiling Point Apparatus
- Beckmann's Freezing Point Apparatus
- Beckmann's Thermometers
- Beckmann's Thermometers, Magnifiers for
- Beechwood Pantographs
- Beeswax
- Bell Crank Lever
- Bell Experiment
- Bell Jars
- Bell Jars
- Bell Pushes
- Bell Receivers
- Bell Set, Electric
- Bell Wire
- Bells, Electric
- Bell's Telephones
- Bellows, Acoustic
- Bellows, Foot, for use with Sirens
- Bellows, Foot
- Bench Drills
- Bench Grinder
- Bench, Polarisation
- Bench Vices
- Benches, Optical
- Bennett's Gold Leaf Electroscopes
- Bent Wire Stirrups for Glass Rods
- Berthelot's Apparatus for Determining the Latent Heat of Steam
- Bertin's Commutator
- Bertram's Inclined Planes
- Bezold's Tuning Fork
- Bichromate Batteries, Zincs and Carbon Plates for
- Bichromate Batteries
- Binaural Stethoscopes
- Binding Strips for Lantern Slides
- Binoculars, Prismatic
- Binomial Cubes
- Biot's Apparatus to Demonstrate that Electricity resides only on the Surface
- Bi-Prisms, Fresnel's
- Bi-Prisms, Fresnel's
- Birch's Tangent Lens Gauge
- Bismuth and Antimony Thermopiles
- Bismuth and Antimony Thermopiles
- Bismuth and Antimony Bars
- Bismuth, Antimony and Nickel Bars, set of three Bars
- Bismuth Cylinders for Conductivity Experiments
- Blackboard Chalks
- Blackboard Compasses
- Blackboard Compasses
- Blackboard Easels
- Blackboard Set Squares
- Blackboard T Squares
- Blackboards
- Black Glass Plates, optically worked
- Bladder Frame and Weights
- Bladder Glasses
- Bladders, India Rubber
- Blanket Pins
- Blocktype Accumulators
- Blocks of Wood (Supports)
- Blocks, Hardwood and Boxwood
- Blocks, Wooden, Rectangular
- Blowpipe
- Blue Radiating Powder
- Bobbin, high frequency Transformer
- Bobs, Pendulum
- Boiler, Steam, Marcet's
- Boiling Point Apparatus
- Boiling Point Apparatus, Beckmann's
- Bologna Phials
- Bolometer, Langley's
- Bolometer, Langley's
- Boss Heads
- Bottles, Glass, Reagent
- Bottles, Prismatic
- Bottles, Specific Gravity
- Bourdon's Ring
- Box Compass for use with Galvanometers
- Boxes of Drawing Pins
- Boxwood Blocks
- Boxwood Cones
- Boxwood Cylinders
- Boxwood Prisms
- Boxwood Protractors
- Boxwood Pulleys
- Boxwood Pyramids
- Boxwood Rules
- Boxwood Rules
- Boxwood Scale Thermometers
- Boxwood Sliding Callipers
- Boxwood Spheres
- Boxwood Trough Compass
- Boyle's Law Apparatus
- Boyle's Law Apparatus
- Boyle's Law, Marriotte's Apparatus for proving
- Boyle's Law Tubes
- Boyle's Law Tubes
- Bows, Violin, 'Cello and Bass
- Bows, Violin, 'Cello and Bass
- Boxes for Lantern Slides
- Boxes, Glass
- Boxwood Scale Thermometer
- Braces, Drilling
- Brackets, Cast Iron, for determining Stiffness and Strength of Beams
- Brackets, Iron, for Pulley Experiments
- Bramah's Press Models
- Brass Balls for Statical Electricity Experiments
- Brass Balls on Stand for use with Whirling Tables
- Brass Carriers for Lantern Slides
- Brass Chain
- Brass Clamp for holding Lenses
- Brass Clamps
- Brass Compass Box
- Brass Compass Box
- Brass Cones
- Brass Cubes
- Brass Cylinders
- Brass Cylinder and Bucket for Archimedes' Principle
- Brass Dividers
- Brass Holders for Luminous Panes, etc.
- Brass Pencil Compasses
- Brass Pocket Levels
- Brass Prisms
- Brass Protectors
- Brass Pulleys
- Brass Pyramids
- Brass Rods
- Brass Slotted Weights
- Brass Spectroscope Stands
- Brass Spectroscope Stands
- Brass Spheres
- Brass Spheres for inserting Proof Planes
- Brass Spheres on Vulcanite Up-rights
- Brass Stands, for holding Diffraction Gratings
- Brass Stands for Solar Thermometers
- Brass Terminals
- Brass Supports for Magnetic Needles
- Brass Wire Spiral for showing Waves
- Braun's Cathode Ray Tubes
- Braun's Cathode Ray Tubes
- Braun-Wehnelt's Vacuum Tubes
- Braun's Tubes, Magnet Spools for
- Breaking Stress of Steel Wires Apparatus
- Breast Drill
- Brequets Metallic Thermometer
- Bresina's Chemical Harmonicons
- Bridge, Carey-Foster
- Bridge, Kohlrausch's Universal
- Bridges, Wheatstone
- Brushes, Paper
- Bucket and Cylinder for Archimedes' Experiment
- Bucket and Syphon for Electrical Experiments
- Bucknell's Balance Hydrometer
- Bulbs, Glass, Weighted
- Bulbs, Glass, for Specific Gravity of Gases
- Bulbs, Luminous
- Bulbs, Vacuum
- Bungs, rubber, squat, tall and shallow pattern
- Bunsen Burner Tubing
- Bunsen Burners
- Bunsen Burners
- Bunsen's Apparatus for Determining Expansion of Water on Freezing
- Bunsen's Absorptiometer
- Bunsen's Batteries, Glass Jars for
- Bunsen's Cells
- Bunsen's Cells, Zincs and Carbon Plates for
- Bunsen's Grease Spot Discs
- Bunsen's Grease Spot Photometers
- Bunsen's Ice Colorimeter
- Bunsen-Reichert's Ice Calorimeter
- Bunsen's Syphon Barometers
- Bunsen's Universal Clamp Supports
- Burettes
- Burette Clips
- Burette Stands
- Burette Stands
- Burner and Oven for Soldering
- Burners, Bunsen
- Burners, Bunsen
- Burners, Gas, for Optical Bench Experiments
- Burners, Gas, for producing Singing Flames
- Burners, Koenig's Sensitive Flame
- Burner with Batswing Jet
- Bursting Bottles, Cast-iron
- Butterfly Net, Faraday's
- Buzzer, Electric
- Cabinet of Mechanical Powers
- Cabinet, Silencing
- Cabinets, Tool
- Cable Type Accumulators
- Cadmium Cells
- Cage, Wire, for Electrical Experiments
- Cagniard de la Tour's Simple Sirens
- Calculating Rules
- Callendar's Mechanical Equivalent of Heat Apparatus
- Calliper Gauges
- Callipers
- Calorifer, Andrews'
- Calorimeters, Bunsen's Ice
- Calorimeters, Joule's
- Calorimeters, Various
- Calorimeters for Fuel Testing
- Calorimeters, Roland Wild
- Camden Measure (for Rain Gauge)
- Camera, Obscura
- Camera, Pinhole
- Camera Stands
- Cameras, Various
- Cams, Reciprocating and Circular Motion
- Canal Ray Tubes
- Canary Wood Mercury Trays
- Candle Holders
- Canisters, Cubical Tin
- Cannon, Electrical
- Canvas Lined Rubber Pressure Tubing
- Capillary Plates
- Capillary Tubes, Set of 6 in Frame
- Carbon Bisulphide Prisms
- Carbon Blocks for Bunsen's Batteries
- Carbon Dioxide, Apparatus for determining the Isothermals of
- Carbon Megohms
- Carbon Plates for Bichromate Batteries
- Carbon Rheostats
- Carbons, Arc Lamp
- Carbons for Arc Lamps
- Carborundum Detectors
- Cardboard Cylinders for showing Stationary Waves
- Cardboard Pill Boxes
- Cardboard Resonators
- Cardboard Sheets
- Cardboard Tube for Heat Experiments
- Carey-Foster Bridge
- Carré's Ice Machine, Apparatus for demonstrating Principle of
- Carré's Liquefaction Apparatus
- Carrier for Slotted Weights
- Carriers for Lantern Slides
- Cartesian Divers
- Cartesian Figures
- Carved Wood Frame Aneroid Barometers
- Case Openers
- Case for Sequoia Plane Table
- Cases for Bar Magnets
- Cases of Mathematical Instruments
- Cassettes for Intensifying Screens
- Cast-iron Bursting Bottles
- Cathetometers
- Cathode Ray Tubes
- Cathode Ray Tubes
- Cathode Ray Tubes
- Catskin Rubbers
- Cello Bows
- Cello Bows
- Cells, Battery, Porous Ware
- Cells, Bunsen's
- Cells, Cadmium
- Cells, Daniell's
- Cells, Daniell's
- Cells, Grove's
- Cells, Leclanché
- Cells, Lighting Type
- Cells, Minotti
- Cells,
- Cells, Smee's
- Cells, Stoneware, for Bunsen's Batteries
- Celluloid Protractors
- Celluloid Set Squares
- Centre of Gravity Apparatus
- Centrifugal Force Machine
- Chain, Brass
- Chain of Platinum and Silver
- Chains, Land
- Chalk Holders
- Chalks, Blackboard
- Charging Dynamos
- Charging Sets for Accumulators
- Charles's Law, Apparatus to prove
- Charts for Thermographs
- Charts of the Metric System
- Chatterton Compound
- Chemical Harmonicons
- Chemicals, Various
- Cheshire's Disc
- Cheshire's Wave Motion Apparatus
- Chimes, Electric
- Chisels
- Chladni Plates
- Chladni Mirrors
- Chladni's Figures, Set of Apparatus for
- Chronographic Tuning Fork
- Cinematographs
- Circles, Rubber, for Foot Bellows
- Circular Diffraction Gratings
- Circular Protractors
- Circular Spirit Levels
- Circular Verniers, Models of
- Circulation of Water Apparatus
- Clamp and Screw for Light Experiments
- Clamp Supports, Bunsen's
- Clamped Deal Drawing Boards
- Clamps for Condensers
- Clamps for holding Chladni Plates
- Clamps for holding Lenses
- Clamps, Iron, for supporting Kundt's Tubes
- Clamps, Malleable Iron
- Clamps, Retort Stand
- Classen's Apparatus for the Electrolytical Estimation of Copper
- Clément and Desormes Apparatus
- Clips, Earth (for Wireless)
- Clips for Burettes
- Clock Springs
- Clocks, Seconds
- Co-efficient of Absolute Expansion of Liquids, Weinhold's
- Co-efficient of Dilation of a Liquid, Apparatus for Determining
- Co-efficient of Expansion of Gases Apparatus
- Co-efficient of Expansion of Air Apparatus
- Coil Friction Apparatus
- Coil, Induction, for use with Microphones
- Coil, Induction, Weinhold's
- Coils for d'Arsonval Galvanometers
- Coils, Resistance
- Coils, Tuning or Inductance
- Cold Water Floats
- Cold Water Floats
- Collision Ball Lantern Slide
- Colour Blindness, Tests for
- Colour Discs, Newton's
- Coloured Wools, Set of
- Combination Pliers
- Combinations of Magnets
- Combined Ammeter and Voltmeter
- Combined Barograph and Thermograph
- Combined Inclinometer and Sighting Rule
- Combined Inclinometer and Compass
- Combined Screw and Worm Wheel Jack
- Combined Volt and Ammeters, Watch Type
- Communicating Vessels, Glass
- Commutators
- Comparison Gas Burners
- Comparison Magnetometer
- Compass Box, Azimuth
- Compass Box for use with Galvanometers
- Compass Cards
- Compass and Inclinometer combined
- Compass, Trough, Boxwood
- Compasses, Beam
- Compasses, Blackboard
- Compasses, Blackboard
- Compasses, Magnetic
- Compasses, Pencil
- Compasses, Prismatic
- Compasses, Trough
- Compensated Pendulum, Harrison's
- Complementary Prisms
- Compound Bars of Brass and Iron for Expansion of Solids Experiments
- Compound Cylinder of Brass and Wood for showing different Conducting Powers
- Compound Horseshoe Magnets
- Compound Wheels and Axles
- Compound Wheels and Axles
- Compression Balances
- Compression of Springs, Apparatus
- Concave Mirror with strip of silver scraped off
- Concave Mirrors
- Concave Reflectors
- Concussion of Air Apparatus
- Condenser Clamps
- Condenser for use with Induction Coils
- Condenser Panels (for Wireless)
- Condensers for Statical Electricity Experiments
- Condensers (for Wireless Sets)
- Condensers, Paper
- Condensers, Sliding
- Condensing Syringes
- Conducting Powers of Solids, Apparatus for showing
- Conduction and Convection Apparatus
- Conduction of Metals, Apparatus for showing
- Conductivity, Apparatus for Experiments in
- Conductivity of Water, Apparatus to demonstrate
- Conductors, Wood covered with Tinfoil
- Cone and Inclined Plane
- Cones, Boxwood
- Cones, Brass
- Cones for producing Circular Spectrum
- Cones in 4 Sections showing Circle, Ellipse, etc.
- Conical Conductors
- Conical Tins, Glazebrooks
- Connectors for Coupling
- Connectors for Flexible Wire
- Connectors, Various
- Constant Volume Air Thermometer
- Contact Breakers for Induction Coils
- Contact or Press Keys
- Contrast of Colours Apparatus
- Control Switchboards
- Convection in Air, Glazebrook's Apparatus to show
- Convection of Heat, Apparatus
- Converging System of Lenses
- Convex Mirrors
- Convex Mirrors with strip of Silver scraped off
- Copper Balls, for Heat Experiments
- Copper Calorimeters
- Copper Tube and Pair of Oak Boards for Heat Experiments
- Copper Vessels for use as Steam Boilers
- Copper Voltameters
- Copper and Zinc Plates for making simple Cells
- Copper Bell Wire
- Copper Cubes
- Copper Cylinders
- Copper Sulphate
- Copper Tube and Oak Boards for Friction Experiments
- Copper Tubing, Flexible
- Copper Wire, Bare, Enamelled, Cotton covered or Silk covered
- Copper Wires for Conductivity Experiments
- Cord, Flexible Bell
- Cord, Rubber
- Cork and Lead Cubes
- Cork Cubes
- Corks and Shives, Ordinary Bark
- Corks, Rubber, Squat and Tall pattern
- Coulomb's Magnetic Magazines
- Coulomb's Torsion Balance
- Cover for Cutting off Light from Valve Tubes
- Cover Glass and Spot Binder for Lantern Slides
- Covers, Perforated, for Resistances
- Cradles for supporting Tin Tubes
- Crane, Jib
- Crane, Jib
- Critical Temperature Apparatus
- Critical Temperature for Sulphur-Dioxide Apparatus
- Crooke's Radiometers
- Crooke's Tubes
- Cross Spirit Levels
- Cross Spirit Levels
- Cross's Vacuum Scale
- Crova's Discs
- Cryophorus, Sulphuric Acid, Weinhold's
- Cryophorus, Wollaston's
- Crystal and Valve Receiving Sets
- Crystal Detectors
- Crystal Receiving Sets
- Crystal Stage for Polariscope
- Crystals for Detectors
- Crystals, Plates of, for showing Absorption phenomenon
- Crystals, Plates of, for use with Polariscope
- Cubes, Cork and Lead
- Cubes, Glass, for Refraction Experiments
- Cubes, Hollow
- Cubes, Metal, Cork, Glass, Marble etc.
- Cubes of Iceland Spar
- Cubes, Wood
- Cubical Expansion of a Solid, Weight Thermometer to determine
- Cubical Organ Pipes
- Cubical Tin Canisters
- Cup, Aluminium, for Determination of Dew Point
- Curved Pipettes
- Cuthbertson's Plate Electrical Machines
- Cutting Nippers
- Cutting Pliers
- Cylinder and Bucket for Archimedes' Principle
- Cylinders, Measuring
- Cylinders, Measuring
- Cylinders, Metal
- Cylinders, Spouting
- Cylinders, Wood and Brass
- Cylinder, Wire Gauze
- Cylinders, Cardboard, for showing Stationary Waves
- Cylinders for Conductivity Experiments
- Cylinders, Metal, for Specific Heat Experiments
- Cylindrical Bar Magnets
- Cylindrical Cardboard and Zinc Resonators
- Cylindrical Conductors
- Cylindrical Lenses
- Cylindrical Mirrors
- Cylindrical Vacuum Vessels
- Cylindrical Vessel to show Pressure of Atmosphere
- D'Arsonval Galvanometers
- Damp Detectors
- Daniell's Cells
- Daniell's Cells
- Daniell's Cells, Zincs for
- Daniell's Hygrometers
- Daniell's Hygrometers
- Danish Steelyards
- Dark Chamber for examining Phosphorescent Substances
- Dark Room Lamps
- Dark Space Tube
- Davy Safety Lamps
- Dead-beat Moving-coil Ammeters and Voltmeters
- Dead-beat Moving-Coil Pointer Galvanometer
- Deal Drawing Boards
- Decomposition of Water Apparatus
- Deflection of Beams and Springs, Testing Apparatus for
- Deflection Magnetometers
- Deflection Tubes
- Delachanal and Mermet's Spark Tube
- De La Rive's Apparatus
- De La Rive's Apparatus
- Delezenne's Circle
- Demonstration Lanterns
- Demonstration Models
- Demonstration of Hertz Waves Apparatus
- Demonstration Rules
- Demonstration Set of Instruments for Frictional Electricity Experiments
- Demonstration Set of Thermometers and Screen
- Demonstration Spherometers
- Demonstration of Transverse Waves Apparatus
- Demonstration Wheel Barometer
- Density of Atmospheric Air, Vessel for determining
- Density of Water Apparatus
- Depth Gauges
- Detectors, Crystal
- Determination of Freezing Point Apparatus
- Determination of
- Determination of
- Dew Point Determination, Regnault's Hygrometer for
- Dew Point Determination, Aluminium Cup for
- Dewar's Vacuum Vessels
- Developing Dishes
- Developing Dishes
- Dial Resistance Boxes
- Dialyser, Graham's
- Dialysis Papers
- Dia-magnetic Apparatus
- Diamond Leyden Jars
- Differential Air Thermometers
- Differential Pulley Blocks
- Differential Thermometer, Beckmann's
- Diffraction Gratings
- Digester, Papin's
- Dilatometers
- Dine's Hygrometers
- Dine's Hygrometers
- Dip Circle
- Dip Needles
- Direct Reading Barometers
- Direct Vision Spectroscopes
- Discharge Key, Morse
- Discharging Pillars and Points
- Discharges
- Disc Records for Gramophones
- Discs, Sturgeon's
- Discs, Bunsen's Grease Spot
- Discs, Cheshire's
- Discs, Crova's
- Discs of Soft Sheet Iron
- Discs, Newton's Colour
- Discs, Vulcanite
- Discs, Whirling Table
- Discs, Wooden
- Dishes, Photographic
- Dishes, Photographic
- Displacement Vessels
- Distribution of Electricity Apparatus
- Divers, Cartesian
- Divided Megohm
- Dividers, Brass
- Dodecahedron, Hardwood
- Dolezalek's Quadrant Electrometer
- Doppler's Tuning Fork
- Dorman's Wave Slide
- Double-barrelled Air Pumps
- Double Concave Lenses
- Double Convex Lenses
- Double Cone and Inclined Plane
- Double Connectors
- Double Pole double throw Switches
- Double Type Variable Condensers
- Double Pendulum, Airy's
- Double Refracting Prism
- Double-Walled Vacuum Vessels
- Dove's Sirens
- Dove's Improved Hydrometer
- Draining Racks
- Drawing Boards, Deal
- Drawing Instruments
- Drawing Pins
- Drenteln's Apparatus for demonstrating interference of Sound Waves
- Drills
- Drum Armature, Model of
- Dry Cells,
- Dubilier Condensers
- Du Bois Magnet
- Du Bois Raymond Keys
- Du Bois Raymond Coils
- Dumas' Vapour Density Apparatus
- Dumas' Vapour Density Bulbs
- Dust Tube Apparatus, Kundt's
- Dutch Metal
- Dutrochet's Endosmometer
- Dynamometer and Rope Brake
- Dynamometers, Spring
- Dynamos
- Dynamos for Charging Accumulators, or for House Lighting, etc.
- Dynamos, Driving Gear for
- Earth Clips (for Wireless)
- Earth Inductor
- Earth Thermometer
- Ear, Models of
- Ear, Trumpets
- Easels for Blackboards
- Ebert's Tubes
- Ebonite Rod
- Ebonite Sheet
- Ebony Bar Parallel Rules
- Ebony Cones
- Ebony Cubes
- Ebony Cylinders
- Ebony Spheres
- Edser's Thermal Conductivities of Metal Rods Apparatus
- Efficiency of Screw Apparatus
- Eisenlohr's Wave Machine
- Elasticity of Steam, Apparatus for Measuring
- Electric Amalgam
- Electric Arc Lamps
- Electric Arc Lamps
- Electric Bells
- Electric Bell Wire
- Electric Buzzer
- Electric Chimes, Set of
- Electric Enlarger
- Electric Generators
- Electric Lamps and Fittings
- Electric Motors for Statical Electricity Experiments
- Electric Motors and Regulators
- Electric Wave Apparatus
- Electric Whirls
- Electrical Cannon
- Electrical Circus
- Electrical Machines
- Electrical Pistol
- Electrical Radiometers, Puluy's
- Electrical Units, Table of
- Electrical Wires on Reels
- Electrolytic Interrupters
- Electrolytical Estimation of Copper, Classen's Apparatus for
- Electro Magnet for Vacuum Tubes
- Electro Magnets
- Electrometer, Dolezalek's
- Electrometer, Henley's
- Electrometer, Pith Ball
- Electrometer, Stewart & Gees
- Electrophorus
- Electro-Plating Apparatus
- Electroscopes
- Elements, Table of
- Ellipsoid of Revolution, Hardwood
- Emery Cloth
- Empty Thermometer Tubes
- Enamelled Steel Beakers
- Endosmometer, Dutrochet's
- Energy of Fly-Wheels Apparatus
- Engineers' Rules
- English Weights and Measures
- Enlarger, Electric
- Enlargers for Artificial Light
- Eolipile
- Equal-weight Wire Figures, Plateau's
- Equilateral Prism mounted on Foot
- Equilateral Prisms
- Equilibrium Apparatus
- Ether Apparatus, Weinhold's
- Ether Thermoscope
- Eureka Wire, Bare and Double Silk covered
- Evaporation Gauge
- Exhausting Syringe
- Exide Batteries
- Expansion of Gases Apparatus, on Stand
- Experimental Fly-Wheels
- Extension and Compression of Springs Apparatus
- Expansion of Gases, Apparatus
- Expansion of Air and Gas, Apparatus
- Expansion of Water, Bunsen's Apparatus for Determining
- Expansion of Liquids Apparatus
- Expansion of Solids Apparatus
- Eyepieces for Telescopes
- Eye, Models of
- Factory Thermometers
- Faber's Precision Calculating Rules
- Face Mask
- Faraday's Apparatus for Dia-magnetic Experiments
- Faraday's Apparatus for Induced Currents
- Faraday's Butterfly Net
- Faraday's Ice Pails
- Faraday's Law, Apparatus for proving
- Ferguson's Pyrometers
- Field Cameras
- Field Glasses
- Field Telescopes
- Figures, Cartesian
- Figures, Pith
- Filament Resistances (for Wireless Sets)
- File and Rasp
- File Cleaner or Wire Brush
- Files, Assortment of six, on card
- Files, Triangular, Flat and Rat-tail
- Filings, Iron
- Filings, Steel
- Fire Engine Models
- Fire Syringe, Pneumatic
- Fitzroy Barometers
- Fixed Condensers, Dubilier
- Flame Experiments, Wire Gauze for
- Flannel Rubbers
- Flask and Tube for Determining Boiling Point of Thermometer
- Flask for Examining Absorption Bands in Liquids
- Flask for Liquefying Gases
- Flasks, Glass
- Flasks, Measuring
- Flasks to show that Air has Weight
- Flat File and Rasp
- Flat Files
- Flat Spirals for illustrating Induced Currents
- Fletcher's Trolley Apparatus
- Fleuss' Patent Geryk Vacuum Pumps
- Flexible Bell Cord
- Flexible Metallic Steel Tubing
- Flexible Wire, Connectors for
- Floating Batteries
- Float, Cold Water
- Floats, Cold Water
- Flow of Water Apparatus
- Fluid Friction Apparatus
- Fluid Pressure Apparatus
- Fluorescent Liquids in Sets
- Fluorescent Screens (Barium Platino Cyanide)
- Fluorescent Screens (White Salt)
- Fluorescent Vacuum Tubes
- Fluoroscopes
- Fly-Wheels, Experimental
- Focus Tubes, X-Ray
- Focuslite Outfits for Lanterns
- Focuslite Slide Lantern
- Folding Lenses
- Folding Plate and Film Camera
- Foot Bellows, for use with Sirens
- Foot Bellows
- Foot Bellows, Rubber Circles for
- Foot Bellows, String Net for
- Foot Pump
- Forbes' Thermal Conductivity Apparatus
- Force Pump Models
- Forks, Tuning
- Formation of Vapour in a Vacuum, Apparatus to show
- Fortin's Standard Barometers
- Foucault's Pendulum
- Fountain of Fire Apparatus
- Fountains of Glass, Hero's
- Fountain in Vacuo Apparatus
- Fox-tail Rubbers
- Framed Set Squares
- Franklin's Fulminating Panes
- Freezing Apparatus
- Frick's Parallelogram of Forces Apparatus
- Friction Apparatus
- Friction Apparatus
- Frictional Electricity Apparatus
- Frictional Electricity Experiments, Demonstration Set
- Friction Tubes
- Freezing Point Determination Apparatus
- Freezing Point Apparatus, Beckmann's
- Freezing Water, Apparatus for
- Frequency of Tuning Forks Apparatus
- Frequency of Tuning Forks Apparatus
- Fresnel's Bi-Prism
- Fresnel's Bi-Prism
- Fresnel's Mirrors
- Fresnel's Rhombs
- Fry's Apparatus for Determining Co-efficient of Linear Expansion
- Fry's Spring Balance Monochores
- Fuel Testing, Calorimeters for
- Fulcrum and Lever
- Fuller Blocktype Accumulators
- Fulminating Panes
- Funnels, Glass
- Fusible Wire for Cut-outs
- Galilean Telescope, Model of
- Galton's Whistles
- Galvanometer, Dead-beat, Moving-Coil
- Galvanometer Dials
- Galvanometer Lamps and Scales
- Galvanometer Mirrors
- Galvanometer Scales
- Galvanometer Shunts
- Galvanometers, Astatic
- Galvanometers Astatic
- Galvanometers, d'Arsonval
- Galvanometers, Lecture
- Galvanometers, Reflecting
- Galvanometers, Tangent
- Galvanometers
- Galvanoscopes
- Gas Burner and Oven for Soldering
- Gas Burner with Batswing Jet
- Gas Burners for Optical Bench Experiments
- Gas Burners for producing Singing Flames
- Gas, Expansion of, Apparatus
- Gas Jars
- Gas Pliers
- Gaugain's Tangent Galvanometer
- Gauges, Calliper
- Gauges, Depth
- Gauges for Lenses
- Gauges, Evaporation
- Gauges for Rain
- Gauges for Rain
- Gauges, Hole and Cylinder
- Gauges, Micrometer Screw
- Gauges, Syphon for Air Pump Work
- Gauges, Wire
- Gauze, Iron Wire
- Gauze, Iron Wire for Flame Experiments
- G Determination Apparatus
- G Determination Apparatus
- Gear Wheels, Trains of
- Gee Resistance Board
- Gehrke & Reichenheim's Anode Ray Tubes
- Generators and Jets, Acetylene
- German Tinder
- Geissler's Vacuum Tubes
- Gem Spanner
- Generators, Electric
- Geometric Tripod Stands
- Geometrical Figures, Set of 12
- Geometrical Instruments in Case
- George's New Balancing Machine
- Geryk Vacuum Pumps
- Gilding and Plating Apparatus
- Gill's Chart of the Metric System
- Gilt Watch Aneroids
- Glaisher's Rain Gauge
- Glass Ball, Rotating (Electrical Circus)
- Glass Ball, Rotating for Air Pump Work
- Glass Beakers
- Glass Beakers, thick, for Cold Solutions
- Glass Boxes
- Glass Breaking Squares
- Glass Bulbs for Specific Gravity of Gases
- Glass Bulbs, Weighted
- Glass Calorimeters
- Glass Communicating Vessels
- Glass Cubes for Refraction Experiments
- Glass Cubes
- Glass Flask for Liquefying Gases
- Glass Flasks to show that Air has Weight
- Glass Flasks
- Glass Funnels
- Glass Globes for use with Whirling Tables
- Glass
- Glass Immersion Jars for Hydrometers
- Glass Jars for Bunsen's Batteries
- Glass Jars for Grove's Cells
- Glass Jars, Resonance
- Glass Jars for Smee's Cells
- Glass Jugs, Graduated
- Glass, Lead
- Glass Measures, Conical and Cup form
- Glass Measuring Cylinders
- Glass Measuring Flasks
- Glass Models of Pumps, Fire Engines
- Glass Plates, Black, Optically worked
- Glass Prisms, Various
- Glass Receivers for Guinea and Feather Apparatus
- Glass Receivers for Torricellian Experiments
- Glass Reservoirs for Mercury
- Glass Reservoirs for Mercury
- Glass Reservoirs for Mercury
- Glass Rod
- Glass Scales
- Glass Slabs for Refraction Experiments
- Glass Steam Traps
- Glass Syphons, for Liquefied Sulphurous Acid
- Glass Syphons, with Suction Tube and Bulb
- Glass Table Tops
- Glass Three-limbed Tubes
- Glass Tube to show Circulation of Water
- Glass Tube filled with Filings
- Glass Tube with five Branches
- Glass Tubes, for Boyle's Law Apparatus
- Glass Tubes for Frictional Electricity Experiments
- Glass Tubes, plain, for Boyle's Law Apparatus
- Glass U Tubes for Relative Density Experiments
- Glass Tubing
- Glass Vessel for Determining the Density of Atmospheric Air
- Glass Vessels for Displacement Experiments
- Glass Vessel with five Capillary Tubes
- Glasses, Coloured, Set of seven
- Glasses for showing Newton's Rings
- Glasses, Reading
- Glasses, Steel Coloured, to show Absorption
- Glazebrook's Apparatus, for Experiments on the Eye and Vision
- Glazebrook's Apparatus for Determining Co-efficient of Linear Expansion
- Glazebrook's Apparatus to show Convection in Air
- Glazebrook's Apparatus, for Experiments in Mechanics
- Glazebrook's Parallelogram of Forces Apparatus
- Glazebrook's Conical Tins
- Glazebrook's Conical Tins
- Glazebrook's Density of Water Apparatus
- Glazebrook & Shaw's Apparatus for Demonstrating Law of Magnetic Force
- Glazebrook & Shaw's Calorimeter
- Glazebrook's Thermal Conductivity Apparatus
- Globes, Glass, for use with Whirling Tables
- Globular Vacuum Vessels
- Gloves, Lead Rubber
- Glycerine
- Goetze's Vacuum Tubes
- Gold Leaf
- Gold Leaf Electroscopes
- Goldstein's Tubes
- Goniometers, Wollaston's Reflection
- Goniometers
- Governors for use with Whirling Tables
- Graduated Glass Jugs
- Graduated Measuring Cylinders
- Graduated Sliding Callipers
- Graduated Tubes for Archimedes' Principle
- Graham's Dialyser
- Gramme's Ring, Model of
- Gramme's Ring Armature, Model of
- Gramophones
- Gramophone Records
- Grass Minimum Thermometer
- Gratings, Transmission Diffraction
- Gravesande's Ball and Ring
- Gravesande's Parallelogram of Forces Apparatus
- Gravity Type Ammeters and Voltmeters
- Grease Spot Discs, Bunsen's
- Grease Spot Photometers, Bunsen's
- Grimlich's Mercury Arc Lamps
- Grinder, Bench
- Grooved Planes, V-shaped
- Ground Glass Screens for Optical Bench Experiments
- Groves' Batteries
- Groves' Batteries, Terminals for
- Groves' Cells
- Groves' Cells, Glass Jars for
- Groves' Cells, Zincs for
- Gud Leaks (for Wireless)
- Guinea and Feather Apparatus
- Gunpowder Cup
- Gunther's Apparatus for Determining the Latent Heat of Steam
- Gunther's Apparatus for Determining Co-efficient of Linear Expansion
- Gutta-Percha Cubes
- Gutta-Percha Rods
- Gyroscopes
- Hammer Type Contact Breakers
- Hammerl's Apparatus for producing Currents
- Hammers
- Hammers for striking Tuning Forks
- Hammers, Water
- Hand-Driving Gear
- Handles, Metal, for Fluorescent Screens
- Hand Saws
- Hand Vices
- Handwheel for Centrifugal Force Machine
- Hanging Carrier for Slotted Weights
- Hard and Soft Spheres
- Hardwood Blocks
- Hardwood Cylinders
- Hardwood Cubes
- Hardwood Spheres
- Hare's Apparatus for Determination of Relative Densities of Liquids
- Harmonicons, Chemical
- Harrison's Compensated Pendulum
- Head of Hair
- Head Telephone Receivers for Wireless Sets
- Heat Experiments, Various Apparatus for
- Heaters for Steam
- Heliostats
- Helmholtz' Siren
- Helmholtz' Spherical Resonators
- Helmholtz' Synthesis of Sound Apparatus
- Helmholtz' Vibration Microscope
- Henley's Quadrant Electrometers
- Henley's Universal Discharger
- Hero's Fountains of Glass
- Hero's Steam Engine
- Hero's Steam Engine
- Hertz' Tubes
- Hertz' Waves Demonstration Apparatus
- Hibbert's d'Arsonval Galvanometer
- Hibbert's Magnetic Balance
- Hibbert's Potentiometer
- Hick's Ballistic Balance
- High Frequency Transformer
- High Frequency Transformer Bobbin
- High Temperature Thermometers
- High Tension Batteries
- Hittorf's Tube
- Hofmann's Vapour Density Apparatus
- Hog's Bristles
- Hog's Bristles
- Holders, Brass, for Luminous Panes
- Holders for Candles
- Holders for Chalk
- Holders for Lamps
- Holders for Lenses
- Holders for Lenses
- Holders for Vacuum Tubes
- Holders for Valve Tubes
- Holder, Tuning Inductance
- Holders, Valve
- Hole and Cylinder Gauges
- Hollow Brass Prisms
- Hollow Cubic Decimetre Cubes
- Hollow Glass Prisms
- Hollow Lenses
- Hollow Prisms on Brass Stand with Metal Basin
- Hollow Prism for Spectroscope
- Hollow Tin Cubes
- Holmgren's Set of Coloured Wools
- Hope's Apparatus to show Temperature of Water
- Hope's Apparatus to show Temperature of Water
- Hopkins' Forked Tubes for Demonstrating the Interference of Sound Waves
- Holtz' Vacuum Tubes
- Honeycomb Type Inductance Coil
- Horizontal Adapters
- Horizontal Galvanometer
- Horseshoe Magnets
- Hot Water Circulation Model
- Howard's Rain Gauge
- Humming Top Sirens
- H Tubes for Cadmium Cells
- Hydraulic Ram Model
- Hydraulic Press for Compressing Moulds
- Hydrogen Singing Flame Apparatus
- Hydrometer Immersion Jars
- Hydrometer Trial Jars
- Hydrometers, Accumulator
- Hydrometers, Nicholson's
- Hydrometers, Simple form
- Hydrometers, Specific Gravity
- Hydrostatic Presses
- Hygrometers, Various
- Hygrometers, Various
- Hygrometers, Various
- Ice Calorimeter, Bunsen's
- Ice Calorimeter, Lavoisier's and Laplace's
- Iceland Spar
- Iceland Spar Cubes
- Iceland Spar and Glass Prism
- Iceland Spar Rhombs
- Ice Machine, Carré's, Apparatus for Demonstrating Principle of
- Ice Pails, Faraday's
- Ice, Properties of, Apparatus for Demonstrating
- Icosahedron, Hardwood
- Ignition Batteries
- Illuminants for Lanterns, Methylated Spirit and Paraffin
- Illuminants for Lanterns
- Illuminants for Lanterns
- Immersion Jars for Hydrometers
- Incandescent Lamps with sliding Pillar and Tripod Foot
- Incandescent Lamps
- Inclined Plane and Double Cone
- Inclined Plane and Friction Apparatus
- Inclined Plane Apparatus
- Inclined Planes
- Inclinometer and Compass Combined
- Inclinometer and Sighting Rule Combined
- Inclinometers
- Inclinometers
- Incubator Thermometers
- India-rubber Bands
- India-rubber Bladders
- India-rubber Bungs, Squat, Tall and Shallow Pattern
- India-rubber Corks, Squat and Tall Pattern
- India-rubber Prepared Tape
- India-rubber Sheets for Insulating Purposes
- India-rubber Solution
- India-rubber Tubing for Wave Motions
- India-rubber Tubing
- Indicators, Speed
- Indigo Prisms
- Induced Currents Apparatus
- Inductance Holder, Tuning
- Inductances or Tuning Coils (for Wireless Sets)
- Induction Apparatus to Demonstrate that the more and the less are equal in quantity
- Induction Coil for use with Microphones
- Induction Coil, Weinhold's
- Induction Coils, Condensers for
- Induction Coils, Contact Breakers for
- Induction Coils, Various
- Inductively Coupled Tuning Inductance
- Inertia Apparatus
- Ingenhousz's Apparatus for Conductivity Experiments
- Injector Lime Lights
- Ink for Lantern Slides
- Instrument Wires
- Insulated Stands for Spectrum Analysis Tubes
- Insulating Stands
- Insulating Stools
- Insulators, Aerial
- Intensifying Screens
- Interference Wave Slide, Woodward's
- Interrupters, Electrolytic
- Intervalve Transformer
- Iron Bar Weights
- Iron Brackets for Pulley Experiments
- Iron Clamps for supporting Kundt's Tubes
- Iron and Copper Bar to show different Conducting Power
- Iron and Copper Wire to show difference in Conducting Power
- Iron Cradles for supporting Tin Tubes
- Iron Cubes
- Iron Cylinders
- Iron Discs
- Iron Filings
- Iron Kilo Weights
- Iron Mercury Vessels
- Iron Retort Stands
- Iron Ring for Magnetism Experiments
- Iron Ring Weights
- Iron Sliders for Sliding Friction Apparatus
- Iron Table Tops
- Iron U. Tubes
- Iron Weights
- Iron Wire Gauze
- Iron Wire Gauze for Flame Experiments
- Iron Vices for holding Glass Tubes
- Iron Wires for Conductivity Experiments
- Irregular-shaped Figures
- Isothermals of Carbon Dioxide, Apparatus for Determining
- Jamieson's Sensitive Paper for Experiments in Conduction
- Japanese Fibre Mercury Trays
- Japanned Tin Measures
- Jars, Bell
- Jars, Gas
- Jars, Glass, for Resonance Experiments
- Jars, Glass, for Bunsen's Batteries
- Jars, Glass, for Groves' Cells
- Jars, Glass, for Smee's Cells
- Jars, Immersion, for Hydrometers
- Jars, Leyden, Various
- Jars, Trial, for Hydrometers
- Jet, Auto-Magnetic
- Jets, Acetylene
- Jib Cranes
- Jib Cranes
- Jolly's Air-Bulb Tubes
- Jolly's Air-Bulb Tubes
- Jolly's Paraffin Wax Photometers
- Joly's Specific Gravity Balances
- Joly's Steam Calorimeter
- Joule's Calorimeter
- Jugs, Graduated Glass
- Jumping Spiral, Roget's
- Kaliedoscopes
- Kaleidophone, Melde's Universal
- Kater's Reversible Pendulums
- Kemp's Discharge Key
- Kilo Weights, Iron, for Monochords
- Kilo Weights
- Kinnersley's Thermometer
- Knife-Edges (Iron Brackets)
- Knife Switch
- Knitting Needles, mounted on Metal Foot
- Knitting Needles
- Knitting Needles
- Koenig's Graduated Universal Resonators
- Koenig's Manometric Flame Apparatus
- Koenig's Organ Pipe
- Koenig's Sensitive Flame Burner
- Kohlrausch's Universal Bridge
- Kundt's Apparatus for Determining the Velocity of Sound
- Kundt's Dust Tube Apparatus
- Kundt's Tube for Demonstrating Interference of Sound Waves
- Laboratory Gramophones
- Laboratory Note-Books and Squared Paper
- Laboratory Potentiometer
- Laboratory Stands
- Laboratory Tools
- Lamp Holders
- Lamp for Lanterns, Methylated Spirit
- Lamp Outfits for Lanterns
- Lamp Resistance
- Lamp Resistance, Woodhouse
- Lamp, Tesla
- Lamps, Arc
- Lamps, Dark Room
- Lamps and Scales for Galvanometers
- Lamps, Davy's
- Lamps, Electric Arc
- Lamps (Electric) and Fittings
- Lamps, Incandescent, with Sliding Pillar and Tripod Foot
- Lamps, Mercury Vapour
- Lamps, Phosphorescent
- Lamps, Phosphorescent
- Lamps, Spirit
- Land Chains
- Landsberger's Apparatus for Determination of Molecular Weights
- Langley's Bolometer
- Langley's Bolometer
- Lanterns, Demonstration
- Lantern Slide Binding Outfits
- Lantern Slide Boxes
- Lantern Slide Carriers
- Lantern Slide, Collision Ball
- Lantern Slide Masks
- Lantern Slide Making Apparatus
- Lantern Slide Materials
- Lantern Slide Printing Frames
- Lantern Slide Painting Outfits
- Lantern Slides showing Diagram of Solar Spectrum
- Lantern Slides,
- Lantern Slides
- Lanterns, Focuslite Slide
- Lanterns, Outfits for
- Lanterns, Projection
- Larynx, Models of
- Latent and Specific Heat, Apparatus for
- Latent Heat of Steam, Apparatus for
- Latent Heat of Fusion and Vaporisation Apparatus
- Lathe Bed Rigidity Apparatus
- Lathe Bed Testing Apparatus
- Laths, Metal
- Laths, Wooden
- Laths, Wooden
- Latimer-Clarke's Potentiometer
- Lavoisier's and Laplace's Ice Calorimeter
- Law of Moments Apparatus
- Law of Moments of Forces Apparatus
- Law of Work, Apparatus for proving
- Lead Balls for making Simple Pendulums
- Lead Cubes
- Lead Cylinders
- Lead Glass
- Lead Glass Spectacles
- Lead Rubber Aprons
- Lead Rubber Gloves
- Lead Rubber Sheet
- Lead Sheet
- Lead Sheet for X-Ray Work
- Lead Shot
- Leaks, Grid
- Leaning Towers
- Lecture Apparatus to show Rotation of a Current
- Lecturers' Lenses, in sets
- Leclanché Cells
- Leclanché Cells, Zincs for
- Lecturers' Chalks
- Lecture Galvanometers
- Lees and Chorlton's Conductivity Apparatus
- Lees' Photometer
- Lehfeldt's Vapour Pressure Apparatus
- Leidenfrost's Apparatus for showing the Spheroidal State
- Lenard's Tubes for Experiments on Cathode Rays
- Lens Holders
- Lens Holders
- Lens Measures
- Lens, Sondhauss
- Lenses, Cylindrical, and Sphero-Cylindrical
- Lenses, Double Convex and Double Concave
- Lenses, Folding
- Lenses, Highly Convergent for Polariscope
- Lenses, Highly Convergent for Polariscope
- Lenses, Hollow
- Lenses, Lecturers', in sets
- Lenses (Magnifiers)
- Lenses, Plano-Convex and Plano-Concave
- Lenses, Prismatic
- Lenses, Reading
- Lenses, Spectacle
- Lenses, Spectacle, Assorted, in Sets
- Leslie Canisters
- Leslie's Differential Air Thermometer
- Level of Water Apparatus
- Levelling Tables
- Lever Apparatus
- Lever Apparatus
- Lever and Wedge-shaped Fulcrum
- Lever and Wedge-shaped Fulcrum
- Lever, Optical
- Lever Switches
- Lever Switches
- Levers, Moments, etc., Apparatus for Experiments on
- Levers, Optical
- Levers for Suspension
- Lewis Thompson Calorimeter
- Leyden Jar Batteries
- Leyden Jars
- Lift Pump Models
- Lighting Type Cells
- Lightning Arresters
- Lightning House
- Lime Lights
- Linear Expansion, Table of
- Linen Measuring Tapes, Wind-up and Spring
- Linen Provers
- Liquefaction Apparatus
- Liquefied Sulphureous Acid
- Liquid Oxygen and Liquid Air
- Liquid Shunt Resistance
- Lissajou's Figures Apparatus
- Lodestone mounted in Frame
- Lodestones
- Logarithm Paper
- Longitudinal Wave Apparatus
- Loud Speakers
- Loud Speaking Receivers
- Low Frequency Amplifiers
- Low-Resistance Mercury Bichromate Battery
- Lucy's Metrangle (Surveying Instrument)
- Luminous Paint, Balmain's
- Luminous Panes
- Luminous Tubes
- Low Temperature Thermometers
- Low Temperature Thermometers
- Luminous Cascade Apparatus
- Lummer-Brodhun Photometer
- Luminous Bulb, Thompson's
- Lycopodium Powder
- Lycopodium Powder
- Mabor Limes
- Mach's Organ Pipe
- Mach's Wave Machine
- Machines, Wave, Various
- Magazine Plate Camera
- Magdeburg Hemispheres
- Magnavox Power Amplifiers
- Magnavox Junior Loud Speaker
- Magnavox Senior Loud Speaker
- Magnet, Du Bois
- Magnet Spools for Braun's Tubes
- Magnetic Balance, Hibbert's
- Magnetic Force, Glazebrook & Shaw's Apparatus for Demonstrating
- Magnetic Magazines, Coulomb's
- Magnetic Needles
- Magneto Dynamos
- Magnetometer, Searle's Vibration
- Magnetometers, various
- Magnetoscopes
- Magnets, Bar
- Magnets, Bar, on Stand
- Magnets, Electro
- Magnets fixed to Glass Slides
- Magnets, Horseshoe
- Magnets, Robison's Ball-ended
- Magnets, Telephone, Bar
- Magnifiers for Beckmann Thermometers
- Magnifiers
- Malleable Iron Rings
- Manganin Wire, Bare and Double Silk covered
- Manometers
- Manometric Apparatus, Koenig's
- Manometric Flame Apparatus
- Manometric Flame Mirrors
- Marble Chips
- Marble Cubes
- Marcet's Steam Boiler
- Marconi Double Head Telephone Receivers
- Marconi Unit System Receiving Apparatus
- Marconi Valves for Reception
- Marine Glasses
- Mariners' Compass
- Marriotte's Apparatus for proving Boyle's Law
- Marriotte's Apparatus for proving Boyle's Law
- Mask, Face
- Mason's Wet and Dry Bulb Hygrometers
- Mason's Wet and Dry Bulb Hygrometers
- Mathematical Instruments in Sets
- Mathematical Stencil
- Maximum Thermometers
- Maximum Thermometers
- Maximum Density of Water Apparatus
- Maximum Density of Water Apparatus for use with Projection Lantern
- Maximum Thermometers
- Maxwell's Needles for Torsion of Wires Experiments
- McFarlan Moore's Apparatus
- Measures for Laboratory and Photographic Work
- Measures, Glass, Conical and Cup Form
- Measures, Japanned tin
- Measures for Lenses
- Measures for Rain
- Measuring Cylinders
- Measuring Cylinders
- Measuring Flasks
- Measuring Tapes
- Mechanical Equivalent of Heat Apparatus
- Mechanical Powers, Cabinet of
- Mechanical Powers, Sets of
- Mechanics of Fluids Apparatus
- Mechanics, Nivoc Interchangeable Apparatus for Experiments in
- Megohms, Carbon
- Megohm, Divided
- Melde's Apparatus for showing Stationary Waves
- Melde's Universal Kaleidophone
- Memoranda, Physical Laboratory
- Mercurial Barometer
- Mercury Bichromate Battery
- Mercury Metal
- Mercury Reservoirs, Glass
- Mercury Reservoirs, Glass
- Mercury Reservoirs, Glass
- Mercury Shower Apparatus
- Mercury Spectral Lamp
- Mercury Trays
- Mercury Troughs, Porcelain
- Mercury Vapour Lamps
- Mercury Vessels, Iron
- Metal Clamp and Screw for Light Experiments
- Metal Cubes
- Metal Cylinders
- Metal Cylinders for Conductivity Experiments
- Metal Cylinders for Specific Heat Experiments
- Metal Handles for Fluorescent Screens
- Metal Laths
- Metal Lens Holders
- Metal Objects, Regular and Irregular shape
- Metal Screen and Iris Diaphragm
- Metal Spheres, Solid
- Metallic Steel Tubing
- Metallic Thermometer, Brequet's
- Metallurgical Chisels
- Metallurgical Shears
- Meteorological Instruments,
- Methylated Spirit
- Metrangle, Lucy's (Surveying Instrument)
- Metre Rules
- Metre Rules
- Metric Protractors
- Metric System, Charts of
- Metric Weights and Measures
- Metronomes
- Mica Wheel Tube
- Micrometer Screw Gauges
- Microphones
- Microscope, Helmholtz Vibration
- Microscope, Model of
- Microscope, Nivoc
- Microscopes, Vernier
- Milk-glass Scale Thermometers
- Mill, Barker's
- Milli-Ammeters
- Milli-Voltmeters
- Miners' Lamps
- Minimum Thermometers
- Minimum Thermometers
- Mining Apparatus
- Minotti Cells
- Mirror on Brass Stand
- Mirror Glass, Strips of
- Mirror Scales for measuring the slope of the Elastic Curve
- Mirrors, Angular
- Mirrors, Chladni
- Mirrors, Concave
- Mirrors, Concave and Convex, with strip of silver scraped off
- Mirrors, Convex
- Mirrors, Cylindrical
- Mirrors, Fresnel's
- Mirrors and Large Lens
- Mirrors for Tuning Forks
- Mirrors, Manometric Flame
- Mirrors, Parallel
- Mirrors, Plane Glass
- Mirrors for Reflecting Galvanometers
- Mixed Gases, Voltameter for
- Model Air Thermometer
- Model of an Arch
- Model of Astronomical Telescope
- Model Barometer
- Model Cranes
- Model of Drum Armature
- Model Dynamos
- Model of Galilean Telescope
- Model of Gramme Ring
- Model of Gramme's Ring Armature
- Model of Hydraulic Ram
- Model of Microscope
- Model of Nicol's Prism
- Model of Roman Steelyard
- Model of Sheer Legs
- Model of Siemen's Armature
- Model of Single Needle Telegraph
- Model Speaking Trumpet
- Model Spectroscope
- Model of Steam Engine
- Model of Terrestrial Telescope
- Model Thermometer
- Model Verniers
- Models of Bramah's Press
- Models of Circular Verniers
- Models of Ear
- Models of Eye
- Models and Figures, Set of 16, in box
- Models of Fire Engines
- Models of Larynx
- Models of Pumps
- Models of Screw and Nut
- Models of Screw and Nut
- Models of a Set of Water Wheels
- Modulus of Rigidity Apparatus
- Modulus of Torsion in Rods, Apparatus
- Modulus of Wires Apparatus
- Mohr's Burette Clips
- Mohr's Burettes
- Molecular Weights, Apparatus for Determining
- Moment of a Force Apparatus
- Moments Apparatus
- Moments Apparatus
- Moments of Forces Apparatus
- Moments and Levers Apparatus
- Money's Apparatus for Determining Co-efficient of Linear Expansion
- Monochords
- Monochords
- Monochord Slotted Weights
- Morse Keys
- Morse Keys
- Morse Sounders
- Morse Sounders
- Morse Telegraphs, Pair of
- Morse Writing Apparatus
- Moulds for showing the Regelation of Ice
- Mousson's Apparatus for Demonstrating Properties of Ice
- Motor with Colour Discs
- Motor Parts for Easy Construction
- Motor with Vacuum Tube Rotator
- Motors, Electric
- Motors, Electric, for Statical Electricity Experiments
- Mounting, Baseboard (X-Ray Apparatus)
- Movable Pulley Block
- Movable Joint Clamps
- Moving-Coil Ammeters and Voltmeters
- Moving Coil Galvanometers
- Moving Coil Pointer Galvanometer
- Moving Coil Type Ammeters and Voltmeters
- M. V. T. Electroscope
- Muller's Reflection Apparatus
- Muller's Trough for the Refraction of Liquids
- NAIL Puller
- Needles, Dip
- Needles, Knitting
- Needles, Knitting
- Needles, Knitting, mounted on Metal Foot
- Needles, Magnetic
- Needles (Maxwell's) for Torsion of Wires Experiment
- Needles, Sewing
- Net, Faraday's
- Nets, String, for Foot Bellows
- Newton's Colour Discs
- Newton Rings, Apparatus for showing
- Nicholson's Hydrometers
- Nickel, Bismuth and Nickel Bars, Set of three Bars
- Nickel-Chrome Wire
- Nickel Silver Wire (German Silver), Bare and Double Silk covered
- Nicol's Prism, Model of
- Nicol Prism Polariser
- Nicol's Prisms
- Nicol's Specific Gravity Tubes
- Nippers, Cutting
- Nivoc Ammeters and Voltmeters (Gravity Type)
- Nivoc Ammeters and Voltmeters (Moving Coil Type)
- Nivoc Bunsen Burners
- Nivoc Chemistry Stencils
- Nivoc Combined Ammeter and Voltmeter
- Nivoc Condenser
- Nivoc Dial Resistance Box
- Nivoc Dip Circle
- Nivoc Dry Cells
- Nivoc Foot Bellows
- Nivoc Galvanometer Lamp and Scale
- Nivoc High Tension Batteries
- Nivoc Interchangeable Apparatus for Experiments in Mechanics
- Nivoc Laboratory Clamp
- Nivoc Laboratory Note-Books
- Nivoc Lens Holders
- Nivoc Lens Holders
- Nivoc Microscope
- Nivoc Optical Bench
- Nivoc Patent Mathematical Stencil
- Nivoc Potentiometer
- Nivoc Squared Paper
- Nivoc Telescope
- Nivoc Tangent Galvanometers
- Nivoc Theodolite
- Nivoc Vacuum Foot Pumps
- Nodal Rings, Steel Rod and Disc for showing
- Noerrenberg's Polariscope
- Normal Thermometer
- Normal Thermometer, Anschütz
- Normal Weston Cadmium Cells
- Note-Books,
- Oak Boards and Copper Tube for Heat Experiments
- Oersted's Apparatus
- Oersted's Piezometer
- Oil for use with Geryk Pumps
- Oiled Silk
- Olive Oil
- Opaque Screen for Radiant Heat Experiments
- Opisometers
- Optical Benches
- Optical Bench Experiments, Apparatus for
- Optical Instruments, Miscellaneous
- Optical Lanterns
- Optical Lever
- Optical Lever
- Organ Pipes
- Orrery, for Statical Electricity Experiments
- Orrery
- Oscillating Prism
- Oscilloscope Tubes
- Ovens, Tin, for Warming and Drying Rubbers
- Owen's College Pattern Magnetoscope
- Oxygen, Liquid
- Painting Outfits for Lantern Slides
- Pair of Flat Spirals
- Paint, Luminous
- Panes, Fulminating
- Panes, Luminous
- Pantographs
- Paper Brushes
- Paper Condensers
- Paper, Pole-finding
- Paper, Jamieson's Sensitive for Lectures on Heat
- Paper Scale Thermometers
- Paper Scales
- Paper Scales
- Paper, Squared
- Paper Wheels for Sound Experiments
- Papers, Dialysis
- Papin's Digester
- Para Rubber Strip
- Parabolic Reflectors
- Paraffin Wax Photometers, Jolly's
- Paraffin Wax
- Paraffin Wax Cubes
- Parallel Bench Vices
- Parallel Mirrors
- Parallel Rules, Ebony Bar
- Parallelogram, Ampère's
- Parallelogram of Forces Apparatus
- Parallelogram of Forces Apparatus
- Pascal's Pressure of Liquids Apparatus
- Peltier's Apparatus
- Peandar Self-Recording Rain Gauge
- Pendulum, Airy's Double
- Pencil Compasses
- Pendant Frame Aneroid Barometers
- Pendulum, Foucault's
- Pendulums, Various
- Pendulum Bobs
- Pentane-filled Thermometers
- Percussion Apparatus
- Perforated Covers for Resistances
- Perry's Experimental Fly-Wheels
- Pfaundler's Apparatus for showing Lissajou's Figures
- Phenomenon of Critical Temperature Apparatus
- Phosphor-Bronze Strip
- Photographic Apparatus
- Photographic Dishes
- Photometers, Various
- Phosphorescent Lamps, Puley's
- Phosphorescent Substances
- Phosphorescent Vacuum Tubes
- Phosphorescent Vacuum Tubes
- Photographic Dry Plates, X-Ray
- Physical Balance for Mechanics' Experiments
- Physical Laboratory Memoranda
- Picket Flags for Ranging Poles
- Pickets or Ranging Poles
- Piezometers
- Pile of Glass Plates
- Pill Boxes, Cardboard
- Pillars and Points, Discharging
- Pincers
- Pin-hole Camera
- Pin-hole Gas Burners for Producing Singing Flames
- Pins
- Pipe Wrench Pliers
- Pipes, Organ
- Pipettes, Various
- Pistol, Electrical
- Pith Ball Apparatus
- Pith Ball Apparatus
- Pith Ball Electrometers
- Pith Balls
- Pith Figures
- Pith Figure Plates
- Plane Glass Mirrors
- Plane Tables
- Planes, Inclined
- Planes, V-shaped, Grooved
- Planks for Bending
- Planimeter
- Plano-Concave and Plano-Convex Lenses
- Platinum Vessel for Silver Voltameter
- Platinum and Silver Chains
- Plateau's Equal-weight Wire Figures
- Plates, Adhesion
- Plates, Air-Pump
- Plates, Capillary
- Plates, Chladni
- Plates of Crystal for showing Absorption Phenomena
- Plates of Crystals for use with Polariscope
- Plates, Glass, Optically Worked
- Plates, Pith Figure
- Plates of Tourmaline
- Plates, X-Ray
- Plates of Zinc and Copper for Making Simple Cells
- Plating and Gilding Outfit
- Plating Outfits
- Platinoid Wire, Bare and Double Silk covered
- Platinum Plates for Grove's Cells
- Pliers, Various
- Plug and Tapping Keys Combined
- Plug Adaptors
- Plug Key Battery Switches
- Plug Key Commutators
- Plug Switches
- Plumb Bobs
- Plumb Lines
- Pneumatic Fire Syringe
- Pneumatic Troughs
- Pocket Direct Vision Spectroscopes
- Pocket Rules
- Pocket Spirit Levels
- Pocket Watch Type Voltmeters and Ammeters
- Pohl's Commutators
- Pointer Galvanometer, Dead-beat, Moving-coil
- Pointolite" Lamp Outfit for Lanterns
- Polariscopes
- Polarisation Bench
- Polariscopes, Lenses for
- Polarised Light Apparatus
- Polariser, Nicol Prism
- Pole-finding Paper
- Polygon of Forces Apparatus
- Polyprism
- Porcelain Dishes for Photographic Work
- Porcelain Basins
- Porcelain Fixing Troughs
- Porcelain Mercury Troughs
- Porous Ware Battery Cells
- Portable Batteries
- Portable Cinematograph Projector
- Portable Geryk Pump
- Portable Standard Instruments (Milli-Ammeters, Ammeters, Milli-Voltmeters, Voltmeters)
- Portable Testing Sets, for Resistance or Insulation
- Post Office Resistance Boxes
- Potash High Vacuum Tube
- Potassium Bichromate
- Potentiometer and Wheatstone Bridge
- Potentiometers, various
- Powder, Radiating
- Powell's Wave Machine
- Power Amplifiers
- Poynting's Combined Tapping and Plug Keys
- Poynting's Galvanometer Lamp and Scale
- Precision Calculating Rules, Faber's
- Press Keys
- Presses, Hydrostatic
- Pressure of Air Apparatus
- Pressure of Atmosphere Cylinder
- Pressure of Fluids Apparatus
- Pressure of Gas in all directions, Apparatus
- Pressure of Liquids Apparatus
- Pressure Tubing
- Pressure Tubing for Air-Pump Work
- Pressure Tubing for Air-Pump Work
- Pressure of Water Apparatus
- Printing Frames
- Printing Frames for Lantern Slides
- Prism Photometers
- Prism Tables
- Prismatic Compass
- Prisms, Boxwood and Brass
- Prisms, Carbon Bisulphide
- Prisms, Double Refracting
- Prisms, Glass, Various
- Prisms, Hollow on Brass Stand with Metal Basin
- Prisms, Hollow, for use with Spectroscope
- Prisms, Hollow Glass
- Prisms, Indigo
- Prisms, Oscillating
- Prisms, Quartz
- Prisms, Silbermann's
- Prismatic Binoculars
- Prismatic Bottles
- Prismatic Lenses
- Prismatic Troughs
- Press, Hydraulic, for Compressing Moulds
- Pressure Co-efficient of a Gas, Apparatus for Measuring
- Pressure of Water Vapour, Apparatus for Measuring
- Projection Lanterns
- Projector, Cinematograph
- Projectoscope
- Proof Planes
- Propagation of Light Apparatus
- Propagation of Sound Apparatus
- Propagation of Sound Apparatus
- Properties of Ice, Apparatus for Demonstrating
- Properties of Vapours Apparatus
- Protective Appliances (for X-Ray Work)
- Protractor for Dividing Circles
- Protractors, Brass and Celluloid
- Protractors, Boxwood
- Puley's Electrical Radiometer
- Puley's Phosphorescent Lamps
- Puley's Tubes
- Puley's Tubes
- Pulley Block Apparatus
- Pulley Blocks
- Pulley Blocks
- Pulley Brackets
- Pulley Frames
- Pulleys, Aluminium and Brass
- Pulleys, Aluminium and Brass
- Pulleys, Boxwood
- Pulleys, Teakwood
- Pullinger's Apparatus for Determining Co-efficient Expansion
- Pumps, Air
- Pumps, Foot
- Pumps, Geryk Vacuum
- Pumps, Models of
- Puncture of Glass Apparatus
- Pyramids, Boxwood and Brass
- Pyrometers, Ferguson's
- Pyramid, Wire
- Pyramid, Wire, for Experiments on Radiation
- Quadrant Electrometer, Dolezalek's
- Quadrant Electrometers, Henley's
- Quadrant Electrometer, Stewart & Gee's
- Quartz Prisms
- Quincke's Lecture Apparatus
- Quincke's Tube
- Rackwork Astronomical Slides
- Racks for X-Ray Tubes
- Radiating Powder, Blue
- Radiators, Steam
- Radiometers, Acoustic
- Radiation of Heat Apparatus
- Radiometers, Crooke's
- Radiometers, Puley's Electrical
- Rafferty Wave Length Spectroscope
- Railway Tube
- Rain Gauges
- Rain Gauges
- Ranging Poles
- Rat-tail Files
- Reading Glasses
- Reading Telescopes
- Reagents for Spectrum Analysis
- Receivers for Torricellian Experiments
- Receivers, Glass, for Guinea and Feather Apparatus
- Receivers, Telephone
- Records for Gramophones
- Rectangular Glass Slabs for Refraction Experiments
- Rectangular Glass Jars for Grove's Cells
- Rectangular Wooden Blocks
- Rectifiers (Accumulator Charging Sets)
- Rectangular Tubes for Examining Absorption Bands in Liquids
- Rectilinear Propagation of Light Apparatus
- Red Wax, Soft
- Reels of Unspun Silk
- Reflection Apparatus, Muller's
- Reflection and Refraction of Light Apparatus
- Reflection and Refraction Troughs
- Reflection Goniometers, Wollaston's
- Reflection of Heat Apparatus
- Reflectors, Various
- Reflecting Galvanometers
- Reflex Cameras
- Refractive Index of Water, Apparatus to show
- Regelation of Ice, Moulds for showing
- Regnault's Apparatus for Determination of the Absolute Expansion of a Liquid
- Regnault's Boiling Point Apparatus
- Regnault's Calorimeter
- Regnault's Hygrometers
- Regnault's Hygrometers
- Regnault's Piezometer
- Regular and Irregular-shaped Metal Objects
- Regulators for Electric Motors
- Relation of Forces Apparatus
- Relative Densities of Liquids Apparatus
- Relay and Electric Bell Apparatus
- Repeating Spectrometer
- Reservoirs for Mercury
- Reservoirs for Mercury
- Reservoirs for Mercury
- Resistance Board
- Resistance Boxes
- Resistance Boxes, Dial
- Resistance Coils
- Resistance Frames
- Resistance Lamp, Woodhouse Pattern
- Resistance Units
- Resistance Wires
- Resistances
- Resistances, Adjustable, (Slate Types)
- Resistances, Adjustable (Tubular Types)
- Resistances, Adjustable (Ventilated Patterns)
- Resistances, Anode
- Resistances, Filament (for Wireless Sets)
- Resonance Apparatus
- Resonance Apparatus
- Resonance Glass Jars
- Resonators
- Retort Rings
- Retort Stand Clamps
- Retort Stands
- Reversible Pendulums
- Rheostat, Filament (for Wireless Sets)
- Rheostats, Carbon
- Rhombs of Iceland Spar
- Rhombs, Fresnel's
- Right-angled Prisms
- Rigidity Apparatus
- Rijke's Sounding Tube
- Ring Weights, Iron
- Ring and Ball, for use with Whirling Tables
- Ring, Soft Iron, for Magnetism Experiments
- Ring Telephone Receivers
- Rings for Retort Stands
- Rings to Illustrate Spheroidal Form of the Earth
- Rintoul's Spring Dynamometer
- Rintoul's Tube and Flask
- Rising Table
- Ritchie's Apparatus for Absorption of Heat Experiments
- Robinson's Anemometers
- Robison's Ball-ended Magnets
- Rocking Bar, Trevelyan's
- Rod and Disc- or Showing Nodal Rings
- Rod, Ebonite
- Rod, Glass
- Rod-Testing Apparatus
- Rods, for Conductivity Experiments
- Rods for Ranging Poles
- Rods, half Glass and half Brass
- Rods, half Vulcanite, half Brass
- Rods of Brass
- Rods of Gutta-Percha
- Rods of Sealing Wax
- Rods of Shellac
- Rods of Sulphur
- Rods of Vulcanite
- Rods, Steel and Wooden for Sound Experiments
- Roget's Jumping Spiral
- Roland Wild Calorimeters
- Roll of Tinfoil on Glass Tube
- Roll of Tinfoil on Mahogany Table
- Roman Steelyard
- Roman Steelyard
- Roof Trusses
- Rope Brake and Dynamometer
- Rotary Rectifiers (Accumulator Charging Sets)
- Rotating Apparatus for Vacuum Tubes
- Rotating Glass Ball (Electrical Circus)
- Rotating Glass Ball for Air-Pump Work
- Rotation of a Current Apparatus
- Rotation of a Magnet Apparatus
- Rubber Bands
- Rubber Bungs, Squat, Tall and Shallow Pattern
- Rubber Circles for Foot Bellows
- Rubber Cord
- Rubber Corks, Squat and Tall Pattern
- Rubber Sheets for Insulating Purposes
- Rubber Sheeting, Thin
- Rubber Strip, Pure Para
- Rubber Tubing for Pressure
- Rubber Tubing
- Rubbers, Catskin, Flannel and Silk
- Rubbers, Foxtail
- Ruby Globes
- Ruhmkorff's Commutators
- Ruhmkorff's Induction Coils
- Rules, Boxwood
- Rules, Boxwood
- Rules, Calculating
- Rules, Parallel, Ebony Bar
- Rules, Sighting
- Rules, Steel
- Rumford's Photometer
- Rupert's Drops
- R Valves for Amplifiers
- Safety Lamps, Davy's
- Salammoniac
- Sand Paper
- Sand, Silver
- Sanderson Cameras
- Savart's Toothed Wheels
- Saws
- Scale and Vernier for Young's Modulus Apparatus
- Scale Pans for Dynamometers
- Scales and Lamps for Galvanometers
- Scales, Galvanometer
- Scales, Glass
- Scales, Paper
- Scales, Paper
- Schuster & Lees' Calorimeters
- Schuster & Lees' Pendulum
- Schuster & Lees' Potentiometer
- Science Lantern Apparatus for Conduction of Metals Experiments
- Science Lantern Apparatus to explain Phenomena of Water when Freezing
- Science Lantern Voltameter
- Screens, for Heat Experiments
- Screens, Fluorescent
- Screens, Ground Glass, for Optical Bench Experiments
- Screens, Intensifying
- Screen, Metal, and Iris Diaphragm
- Screens, Opaque, for Radiant Heat Experiments
- Screens, Stevenson's
- Screens, Wire Gauze, Mounted
- Screw and Nut, Wooden Model of
- Screw and Nut, Wooden Model of
- Screw Clips for Burettes
- Screw Drivers
- Screw and Worm Wheel Jack
- Screw Efficiency and Friction Apparatus
- Screw Efficiency and Friction Apparatus
- Screw Gauges, Micrometer
- Screw Jacks
- Screw Jacks
- Screw, Wooden, in Bracket, with Sliding Rod
- Screws and Nuts
- Screws and Nuts
- Sealing Wax Rods
- Searle's Mechanical Equivalent of Heat Apparatus
- Searle's Rigidity Apparatus
- Searle's Thermal Conductivity Apparatus
- Searle's Vibration Magnetometer
- Seconds Clocks
- Self-Recording Rain Gauges
- Semicircular Glass Slabs for Refraction Experiments
- Semicircular Protractors
- Sensitive Flame Burners, Koenig's
- Sensitive Paper for Conductivity Experiments
- Sequoia Plane Table
- Series Resistance Boxes and Bridges
- Series Spark Gap
- Set of Apparatus for Illustrating Induced Currents
- Set of 3 Bars, Antimony, Bismuth and Nickel
- Set of 7 Coloured Glasses
- Set of Coloured Wools, Holmgren's
- Set of Dia-magnetic Apparatus
- Set of Electric Chimes
- Set of Leslie's Canisters
- Set of Mathematical Instruments
- Set of Metal Cylinders for Conductivity Experiments
- Set of Metal Cylinders for Specific Heat Experiments
- Set of 16 Models and Figures
- Set of Reagents for Spectrum Analysis
- Set of Six Rods for Conductivity Experiments
- Set Squares
- Set Squares for Blackboards
- Set of Standard Meteorological Instruments
- Set of Thermometers with Screen
- Sets of Bar Magnets
- Sets of Boxwood Cylinders
- Sets of Bunsen's Cells
- Sets of Daniell's Cells
- Sets of Fluorescent Liquids
- Sets of Hardwood and Boxwood Blocks
- Sets of Lecturers' Lenses
- Sets of Mechanical Powers
- Sets of Metal Cubes
- Sets of Phosphorescent Substances
- Sets of Regular and Irregular-shaped Metal Objects
- Sets of Spheres
- Sets of Wooden Bars for Sound Experiments
- Sets of Wooden Cubes
- Sewing Needles
- Sextant
- Shadow and Stencil Tubes
- Shakespeare's Apparatus for Demonstrating Boyle's Law
- Shakespeare's Constant Volume Air Thermometer
- Shears, Metallurgical
- Sheer Legs, Model of
- Sheet Ebonite
- Sheet Iron Discs
- Sheet Lead
- Sheet, Lead Rubber
- Sheets of Rubber for Insulating Purposes
- Shellac
- Shellac Rods
- Shives
- Shunt for Galvanometers
- Siemen's Armature, Model of
- Sieve for use with Iron Filings
- Sighting Rule and Inclinometer Combined
- Sighting Rules
- Silbermann's Prism
- Silencing Cabinet
- Silica Weight Thermometers
- Silk-covered Flexible Bell Cord
- Silk, Oiled
- Silk Rubbers
- Silver Leaf
- Silver Sand
- Silver-plated Copper Calorimeters
- Silver and Platinum Chains
- Silver Voltameters
- Simple Pendulums
- Singing Flame Apparatus
- Single Needle Telegraph Model
- Single Pole Double Throw Switches
- Sinkers for Measuring Density of a Liquid
- Sine and Tangent Galvanometers
- Siren, Dove's
- Siren Discs
- Siren, Helmholtz
- Sirens, Cagniard de la Tour's
- Sirens, Humming Top
- Six's Self-Registering Maximum and Minimum Thermometer
- Slabs, Glass, for Refraction Experiments
- Slab Pattern Inductance Coils
- Slate Type Adjustable Resistances
- Slide Lantern, Focuslite
- Slide Rules
- Slides, Astronomical (Rackwork Motion)
- Slides, Lantern,
- Slides, Wave
- Sliding Callipers, Graduated
- Sliding Condensers
- Sliding Friction Apparatus
- Sliding Friction Apparatus
- Sliding Friction Apparatus
- Sliding Inductance
- Sliding Weights for Tuning Forks
- Slotted Weights, Brass
- Slotted Weights, Iron
- Slotted Weights, Monochord
- Small Mirrors for Tuning Forks
- Smee's Cells
- Smoke Condensation Apparatus
- Snowdon Rain Gauges
- Snowdon Rain Gauges
- Soft Iron Bars
- Soft Iron Ring for Magnetism Experiments
- Soft Red Wax
- Soft Sheet Iron Discs
- Soft Soda Glass Tubing
- Solar Radiation Thermometers
- Solder, Wire, for making Electrical Connections
- Soldering Irons
- Soldering Outfit
- Solenoids
- Solid Spheres, Wood and Metal
- Sondhauss' Lens
- Sound Analysis Apparatus
- Sound Apparatus
- Sound Propagation Apparatus
- Sound Propagation Apparatus
- Sound Synthesis Apparatus
- Sounding Tube, Rijke's
- Spanners
- Spare Parts for Batteries
- Spark Gap, Various
- Speaking Receivers, Loud
- Speaking Trumpets, Model
- Specific and Latent Heat, Apparatus for
- Specific Gravity Balances, Joly's
- Specific Gravity Bottles
- Specific Gravity Bulbs
- Specific Gravity Hydrometers
- Specific Gravity Tubes
- Specific Gravities, Table of
- Specific Heats for Air, Clément & Desormes' Apparatus
- Specific Heats of Solids and Liquids Apparatus
- Specimens of Amber
- Spectacle Lenses
- Spectacle Lenses, Assorted, in Sets
- Spectacles, Lead Glass
- Spectral Lamps
- Spectrometers
- Spectroscope Stands
- Spectroscope Stands
- Spectroscopes, Direct Vision
- Spectroscopes, Various
- Spectrum Analysis Apparatus
- Spectrum Analysis Tubes
- Spectrum Analysis Tubes, Insulated Stands for
- Speed Indicators
- Spheres, Brass, for inserting Proof Planes
- Spheres, Brass, on Vulcanite Uprights
- Spheres, Solid, Wood and Metal
- Spherical Conductors
- Spherical Resonators, Helmholtz'
- Sphero-Cylindrical Lenses
- Spheroidal State, Leidenfrost's Apparatus for showing
- Spherometers
- Spherometers
- Spiral, Jumping, Roget's
- Spiral Spring Holders for Lamps
- Spiral Springs
- Spirals, Flat, for illustrating Reduced Currents
- Spirit Lamps
- Spirit Levels
- Spirit Levels, Cross
- Sponges
- Spouting Cylinders
- Sprengel's Specific Gravity Tubes
- Spring Balance Monochords
- Spring Balances
- Spring Balances, Joly's Specific Gravity
- Springclip Terminals
- Spring Dynamometer, Rintoul's
- Spring Magnetometer
- Spring Measuring Tapes
- Springs, Clock
- Springs, Extension and Compression Apparatus
- Springs, Spiral
- Springs, Steel, for Engineering Classes
- Springs, Watch
- Squared Paper
- Standard Barometers, Fortin's
- Standard Cadmium Cells
- Standard Dip Circle
- Standard Hygrometers
- Standard Hygrometers
- Standard Meteorological Instruments, Science School
- Standard Post Office Boxes
- Standard Resistance Coils
- Standard Solar Radiation Thermometers
- Stands for Braun's Tubes
- Stands for Burettes
- Stands for Burettes
- Stands for Cameras
- Stands for Diffraction Gratings
- Stands for holding Iron and Copper Balls
- Stands for Lecture Table Work
- Stands for Retorts
- Stands for Solar Thermometers
- Stands for Spectroscopes
- Stands for Spectroscopes
- Stands for Spectrum Analysis Tubes
- Stands for Tuning Forks
- Stands for Vacuum Tubes
- Stands for Vacuum Tubes
- Stands for Vacuum Tubes
- Stands, Insulating
- Stands, Tripod
- Stands, X-Ray Tube
- Staples, Steel, for Indoor Wiring
- Statical Electricity Apparatus
- Statical Electricity Apparatus
- Steam Boiler, Marcet's
- Steam Calorimeter, Joly's
- Steam Engine (Eolipile)
- Steam Engine, Hero's
- Steam Engine, Sectional Working Model
- Steam Heaters
- Steam Piston, Wollaston's
- Steam Radiators
- Steam Traps
- Steel Bar, Unmagnetised
- Steel Calliper Gauges
- Steel Callipers
- Steel Clock Springs
- Steel Coloured Glasses to show Absorption
- Steel Filings
- Steel Knitting Needles
- Steel Measuring Tapes, Wind-up and Spring
- Steel Rod and Disc for showing Nodal Rings
- Steel Rods for Sound Experiments
- Steel Rules
- Steel Sewing Needles
- Steel Springs for Engineering Classes
- Steel Staples for Indoor Wiring
- Steel Tubing, Flexible Metallic
- Steel Watch Springs
- Steel Wires Breaking Stress Apparatus
- Steelyards
- Stencils, Mathematical
- Stencils,
- Stevenson's Thermometer Screen
- Stereoscopes, Hand
- Stereoscopic Slides
- Sterling Loud Speakers
- Stethoscopes
- Stewart & Gee's Dip Needles
- Stewart & Gee's Magnetometers
- Stewart & Gee's Potentiometer
- Stewart & Gee's Quadrant Electrometer
- Stewart & Gee's Reflecting Galvanometers
- Stirrups, Bent Wire, for Glass Rods
- Stocks' Lamp for Lanterns
- Stoneware Battery Cells
- Stools, Insulating
- Stop-Watches
- String Nets for Foot Bellows
- String Telephones
- Strips of Mirror Glass
- Strips of Pure Para Rubber
- Students' Bichromate Battery Elements
- Students' Optical Bench
- Students' Set of Mathematical Instruments
- Sturgeon's Disc
- Sulphur Rods
- Sulphuric Acid Cryophorus, Weinhold's
- Sulphur-Dioxide, Critical Temperature Apparatus
- Sulphurous Acid, Liquefied
- Sun Dials
- Sunshine Recorders
- Support with two Tubes for use with Whirling Tables
- Supports (Blocks of Wood)
- Supports, Bunsen's Universal
- Supports for Fitting on to Retort Stands
- Supports for Vacuum Tubes
- Supports for Vacuum Tubes
- Supports for Vacuum Vessels
- Supports, Brass, for Magnetic Needles
- Surface of a Sphere Apparatus
- Surveying Instrument (Lucy's Metrangle)
- Suspension Levers
- Switchboard Type Ammeters and Voltmeters
- Switchboards (X-Ray)
- Switches, Lever
- Switches, Lever
- Switches, Plug
- Switches, Double Pole
- Switches, Single Pole
- Symon's Rain Gauge
- Synthesis of Sound Apparatus, Helmholtz'
- Syphon Barometer, Standard
- Syphon Barometers, Bunsen's
- Syphon Gauges, for Air-Pumps
- Syphons, Glass, for Liquefied Sulphurous Acid
- Syphons, Glass, with Suction Tube and Bulb
- Syringe Hydrometer
- Syringe, Pneumatic, for Heat Experiments
- Syringes, Exhausting and Condensing
- Table Spectroscopes
- Table Supports for fitting on to Retort Stands
- Table Telephones
- Table Tops
- Table of Electrical Units
- Table of Elements
- Table of Weights and Measures
- Tables, Levelling
- Tables, Plane
- Tables, Rising
- Tables of Specific Gravities
- Tables, Whirling
- Tangent Galvanometers
- Tantalus Cup
- Tape
- Tape, India-rubber
- Tapes, Measuring, Linen and Steel
- Tapping and Plug Keys Combined
- Tate's Air-Pumps
- Teakwood Pulleys
- Telegraph Alphabet Cards
- Telegraph Instruments
- Tele-Microscopical Apparatus
- Telephone Bar Magnets
- Telephone for use with Kohlrausch Bridges
- Telephone Parts to show Construction
- Telephone Receivers
- Telephone Receivers for Wireless Sets
- Telephone Transformer
- Telephones
- Telephones, String, for Demonstration Purposes
- Telescope for use with Spectroscopes
- Telescopes, Various
- Telescopes, Models of
- Telescopes, Reading
- Telescopic Tripod Stands for Cameras
- Temperature of Water, Hope's Apparatus to show
- Terminals, Various
- Terrestrial and Astronomical Telescopes
- Terrestrial and Astronomical Telescopes
- Terrestrial Telescope, Model of
- Terrestrial Radiation Thermometers
- Tesla Lamp
- Tesla Tubes
- Tesla's High Frequency Apparatus
- Test Tubes
- Testing Apparatus, including Deflection of Beams and Springs, etc.
- Testing Sets for Resistance or Insulation
- Tests for Colour Blindness
- Theodolite
- Thompson's Luminous Bulb
- Thompson's Wave Machine
- Thorium Pastilles
- Thermal Conductivity Apparatus
- Thermal Radiation Apparatus
- Thermionic Valves for Wireless Sets
- Thermo-Electricity, Apparatus
- Thermo-Electricity Apparatus
- Thermograph and Barograph Combined
- Thermographs and Barographs
- Thermometer, Kinnersley's
- Thermometer Screen, Stevenson's
- Thermometer Tubes, Empty
- Thermometer Tubing
- Thermometers and Screen, Demonstration Set
- Thermometers, Air, Constant Volume
- Thermometers, Air, Model
- Thermometers, Anschütz
- Thermometers, Beckmann's
- Thermometers, Boxwood Scale
- Thermometers, Boxwood Scale
- Thermometers, Brequet's Metallic
- Thermometers for Chemical Works
- Thermometers, Differential
- Thermometers, Earth
- Thermometers, High Temperature
- Thermometers, Incubator
- Thermometers, Low Temperature
- Thermometers, Low Temperature
- Thermometers, Maximum and Minimum
- Thermometers, Maximum and Minimum Combined
- Thermometers, Maximum and Minimum Combined
- Thermometers, Maximum
- Thermometers, Maximum
- Thermometers, Milk-glass Scale
- Thermometers, Minimum
- Thermometers, Minimum
- Thermometers, Model, for Heat Experiments
- Thermometers, Model, for Heat Experiments
- Thermometers, Normal
- Thermometers, Paper Scale
- Thermometers, Solar Radiation
- Thermometers, Ungraduated
- Thermometers, Weight
- Thermopiles
- Thermopiles of Bismuth and Antimony
- Thermopiles of Bismuth and Antimony
- Thermoscope, Ether
- Thin Rubber Sheeting
- Thomson's Astatic Galvanometer
- Thread
- Three-limbed Tubes for Hare's Apparatus
- Tin Foil
- Tinder, German
- Tinfoil on Glass Tube
- Tinfoil on Mahogany Table
- Tin Cubes
- Tin Cylinders
- Tin Fusible Wire for Cut-outs
- Tins, Glazebrook's Conical
- Tin Cylinders, for Conductivity Experiments
- Tin Ovens for Drying Rubbers, Glass Tubes
- Tin Vessel for Experiments on Radiation
- Tin Vessels, for Heat Experiments
- Tin Vessels for Displacement Experiments
- Tin Vessels with Vulcanite Handles for Electrical Experiments
- Tins, Glazebrook's
- Tongs, Tourmaline
- Tool Cabinets
- Tools for Laboratory Use
- Toothed Wheels, Savart's
- Torricellian Receivers
- Torsion Apparatus
- Torsion Balance, Coulomb's
- Torsion of Wire Apparatus
- Torsion in Rods Apparatus
- Torsion in Rods Apparatus
- Tourmaline, Plates of
- Tourmaline Tongs
- Towers, Leaning
- Tracing Wheels
- Trains of Gear Wheels
- Transformers (for Wireless Sets)
- Transmission Diffraction Gratings
- Transverse Waves Apparatus
- Trays, Mercury
- Trevelyan's Rocking Bar
- Trevelyan's Rocking Bar
- Trial Jars for Hydrometers
- Triangular Files
- Triangular Glass Slabs for Refraction Experiments
- Triangular Tables for Levelling
- Trilby Limes
- Tripod Stands, Geometric
- Tripod Stands for Cameras
- Tripods
- Trolley Vibration Apparatus
- Troughs, Reflection and Refraction
- Trough for Refraction of Liquids, Muller's
- Trough Compasses
- Trough Compasses
- Troughs, Pneumatic
- Troughs, Porcelain, Mercury
- Troughs, Prismatic
- Troughs, Washing Photographic
- Trough, Wave
- Trough, Zinc
- T Squares
- T Squares for Blackboards
- Truck for Inclined Plane
- Trumpets, Ear
- Trumpets, Speaking
- Tube and Flask for Boiling Point Experiments
- Tube and Flask, Rintoul's
- Tube and Oak Boards for Heat Experiments
- Tube and Oak Boards for Friction Experiments
- Tube, Glass, with five branches
- Tube Rack
- Tube Stands (X-Ray)
- Tubes, Anode Ray
- Tubes, Aron's
- Tubes, Barometer
- Tubes, Barometer
- Tubes, Barometer, with Cap and Stuffing Box
- Tubes, Boyle's Law
- Tubes, Boyle's Law
- Tubes, Canal Ray
- Tubes, Capillary, in Frame
- Tubes, Cardboard, for Heat Experiments
- Tubes, Cathode Ray
- Tubes, Crooke's
- Tubes for Demonstrating Interference of Sound Waves, Various
- Tubes, Ebert's
- Tubes, Empty Thermometer
- Tubes, Glass, for Cadmium Cells
- Tubes, Glass, for Frictional Electricity Experiments
- Tubes, Glass, filled with Filings
- Tubes, Glass, for Boyle's Law Apparatus
- Tubes, Glass Three-limbed
- Tubes, Goldstein's
- Tubes, Graduated, for Archimedes' Principle
- Tubes, Hertz'
- Tubes, Hittorf's
- Tubes, Holtz'
- Tubes, Jolly's Air Bulb
- Tubes, Jolly's Air Bulb
- Tubes, Lenard's
- Tubes, Luminous
- Tubes, McFarlan Moore's
- Tubes, Oscilloscope
- Tubes, Plain, for Boyle's Law Apparatus
- Tubes, Puley's
- Tubes, Puley's
- Tubes, Rectangular, for Examining Absorption Bands in Liquids
- Tubes, Quincke's
- Tubes, Specific Gravity
- Tubes, Spectrum Analysis
- Tubes, Tesla
- Tubes, Test
- Tubes to Show Circulation of Water
- Tubes, U, for Relative Density Experiments
- Tubes, U-form, Iron
- Tubes, Vacuum
- Tubes, Vacuum
- Tubes, Vacuum
- Tubes, Vacuum
- Tubes, Valve
- Tubes, Vapour Tension
- Tubes, Vapour Tension
- Tubes, X-Ray
- Tubes, X-Ray
- Tubing, Barometer and Thermometer
- Tubing, Bunsen Burner
- Tubing, Flexible Metallic
- Tubing, Pressure, for Air-Pump Work
- Tubing, Pressure, for Air-Pump Work
- Tubing, Rubber
- Tubing, Soft Soda Glass
- Tubing, Rubber Pressure
- Tubular Compression Balances
- Tubular Type Adjustable Resistances
- Tuning Coils (for Wireless)
- Tuning Forks, Apparatus for comparing Frequency
- Tuning Forks, Apparatus for comparing Frequency
- Tuning Forks
- Tuning Forks, Chronographic
- Tuning Forks for measuring Small Intervals of Time
- Tuning Forks on Resonance Boxes
- Tuning Inductance Holder
- Turnscrews
- Turpentine
- Tyndall's Apparatus for Demonstrating that Vibrating Segments and Nodes of a Bell are similar to those of a Disc
- Tyndall's Apparatus for Showing that Bodies have different Specific Heats
- Tyndall's Percussion Apparatus
- Tyndall's Propagation of Sound Apparatus
- Tyndall's Propagation of Sound Apparatus
- Ungraduated Thermometers
- Unit Jar
- Universal Clamp Supports
- Universal Condenser, Dubilier
- Universal Discharger, Henley's
- Universal Resonators, Koenig's
- Universal Shunt for Galvanometers
- Universal Tuner (for Wireless)
- Unmagnetised Steel Bar
- Unspun Silk
- Upright Pillar for holding Lenses
- U Tubes for Relative Density Experiments
- U Tubes, Iron
- Vacuum Bulbs, Thompson's
- Vacuum Contact Breaker, McFarlan Moore's
- Vacuum Foot Pumps
- Vacuum Pumps, Geryk
- Vacuum Scale, Cross's
- Vacuum Tube Holders and Stands
- Vacuum Tube Holders and Stands
- Vacuum Tube Holders and Stands
- Vacuum Tube Supports and Rotating Apparatus
- Vacuum Tube Supports and Rotating Apparatus
- Vacuum Tubes
- Vacuum Tubes
- Vacuum Tubes
- Vacuum Tubes
- Vacuum Tubes for Spectrum Analysis
- Vacuum Tubes Apparatus
- Vacuum Tubes Apparatus
- Vacuum Vessels, Dewar's
- Vacuum Vessels, Double-walled
- Vacuum Vessels for Liquid Air
- Vacuum Vibrator
- Valve Holders
- Valve Receiving Sets
- Valve Tube Holders
- Valves for Wireless Sets
- Vapour Density Apparatus, Various
- Vapour Density Bulbs, Dumas
- Vapour in a Vacuum, Apparatus to show Formation of
- Vapour Lamps, Mercury
- Vapour Pressure, Apparatus for Experiments on
- Vapour Tension Tubes
- Vapour Tension Tubes
- Variable Condensers
- Vaseline
- Velocity of Sound Apparatus, Kundt's
- Ventilated Pattern Adjustable Resistances
- Ventilation Apparatus (Mining)
- Ventilation Apparatus (Mining)
- Vernier Microscopes
- Verniers, Circular, Models of
- Verniers, Models of
- Vertical Adapters
- Vessel of Tinplate to show Pressure of Atmosphere
- Vessels, Displacement
- Vessels for Mercury, Iron
- Vessels for Use as Steam Boilers
- Vessels, Glass, for Determining the Density of Atmospheric Air
- Vessels, Glass, Communicating
- Vessels, Glass, with five Capillary Tubes
- Vessels, Tin, for Experiments on Radiation
- Vessels, Tin, for Heat Experiments
- Vessels, Tin, with Vulcanite Handles
- Vessels, Vacuum, Dewar's
- Vibration Apparatus, Fletcher's
- Vibration Magnetometer, Searle's
- Vibration Magnetometers, Stewart & Gee's
- Vibration Microscope, Helmholtz'
- Vibrator, Vacuum
- Vices, Iron, for holding Glass Tubes
- Vices, Various
- Victor Meyer's Vapour Density Apparatus
- Violin Bows
- Violin Bows
- Vitreous Enamelled Resistance Units
- Volt and Ammeters Combined, Watch type
- Voltameters, Various
- Volta's Electroscope
- Volta's Pile
- Voltaic Electricity Apparatus
- Voltaic Electricity Apparatus (Bichromate Batteries)
- Voltmeter and Ammeter Combined
- Voltmeters
- Volume and Temperature of Gas Apparatus
- Vulcanite Discs
- Vulcanite Rods
- V-shaped Grooved Planes
- Wall Cranes
- Wall Telephones
- Washing Troughs
- Watches, Stop
- Watch Form Aneroids
- Watch Form Calculating Rule
- Watch Form Voltmeters and Ammeters
- Watch Springs, Steel
- Watch Telephone Receivers
- Water, Apparatus for Freezing
- Water Decomposition Apparatus
- Water Hammers
- Water Level Apparatus
- Water Pressure Apparatus
- Water Vapour, Apparatus for Measuring Pressure of
- Water Wheels, Models of
- Watson's Copper Calorimeter
- Watson's Spring Balance Monochord
- Wave Apparatus
- Wave Length Spectroscope
- Wave Motion Spiral
- Wave Slides, Various
- Wave Trough
- Wax, Soft Red
- Wax, Soft Red, Paraffin and Bees'
- Weather Vanes
- Wedge and Divided Block of Hard Wood
- Wedge Apparatus
- Wehnelt's Vacuum Tubes
- Weighted Glass Bulbs
- Weights and Measures, Table of
- Weights for Tuning Forks
- Weights, Iron
- Weights, Iron Kilo
- Weights, Monochord Slotted
- Weights, Slotted, Brass
- Weight Thermometers
- Weinhold's Apparatus for Determining the Co-efficient of Absolute Expansion of Liquids
- Weinhold's Ether Apparatus
- Weinhold's Induction Coil
- Weinhold's Longitudinal Wave Machine
- Weinhold's Sulphuric Acid Crophorus
- Wells' Apparatus for Wire Testing
- Weston Differential Pulley Blocks
- West's Graduated Tube for Archimedes' Experiment
- Wet and Dry Bulb Hygrometers
- Wet and Dry Bulb Hygrometers
- Wheatstone Bridges
- Wheel and Axle
- Wheel and Axle
- Wheel and Axle
- Wheel Barometer
- Wheel of Life
- Wheel Pattern Mercurial Barometers
- Wheels, Barlow's
- Wheels, Paper, for Sound Experiments
- Whirling Tables and Accessories
- Whirling Table Siren Discs
- Whirls, Electric
- Wiedmann's Apparatus, to illustrate the Phenomena of Geysers
- William Thompson Calorimeter
- Wilson Self-registering Rain Gauge
- Wimshurst Machines
- Wind-up Measuring Tapes
- Wind Vanes
- Wire, Aerial
- Wire Brush or File Cleaner
- Wire Cage for Electrical Experiments
- Wire, Copper
- Wire, Electric Bell
- Wire, Eureka
- Wire Figures, Plateau's
- Wire for Cut-outs, Pure Refined Tin
- Wire Gauges
- Wire Gauze
- Wire Gauze Cylinder
- Wire Gauze for Flame Experiments
- Wire Gauze Screens, Mounted
- Wire, Iron and Copper, to show Difference in Conducting Power
- Wire, Manganin
- Wire, Nickel-Chrome
- Wire, Nickel Silver
- Wire, Platinoid
- Wire, Pure Refined Tin
- Wire Pyramid
- Wire Pyramid for Experiments on Radiation
- Wire Solder
- Wire Spiral for showing Waves
- Wire Stirrups for Glass Rods
- Wire Testing Apparatus, Wells'
- Wires, Breaking Stress Apparatus
- Wires, Copper, for Conductivity Experiments
- Wires, Iron, for Conductivity Experiments
- Wires for Young's Modulus of Wires Apparatus
- Wireless Receiving Sets
- Wireless Telegraphy and Telephony Apparatus
- Wireless Telegraphy Lantern Slides
- W. J. Burette Stands
- Wollaston's Atmospheric Engine
- Wollaston's Cryophorus
- Wollaston's Reflection Goniometers
- Wollaston's Steam Piston
- Wooden Bars for Sound Experiments
- Wooden Blocks, Rectangular
- Wooden Blocks (Supports)
- Wooden Cases for Bar Magnets
- Wooden Cubes
- Wooden Cylinders
- Wooden Discs
- Wooden Laths
- Wooden Laths
- Wooden Lens Holders
- Wooden Mercury Trays
- Wooden Model of Nicol's Prism
- Wooden Models of Screw and Nut
- Wooden Models of Screw and Nut
- Wooden Moulds for showing the Regelation of Ice
- Wooden Rods for Sound Experiments
- Wooden Screw in Bracket with Sliding Rod
- Wooden Spheres
- Wooden Stands for Braun's Tubes
- Wooden Supports for Vacuum Vessels
- Woodhouse Lamp Resistance
- Wood Stands for Solar Thermometers
- Woodward's Interference Wave Slide
- Works Thermometers
- Worm and Wheel
- Worm Wheel and Screw Jack, Combined
- Wright's Wave Slides
- X-RAY Apparatus
- X-Ray Plates
- X-Ray Tubes
- Yacht Pattern Barometers
- Young's Modulus of Wires Apparatus
- Zinc and Copper Plates for making Simple Cells
- Zinc Beakers
- Zinc Cubes
- Zinc Cylinders
- Zinc Figures to illustrate Centre of Gravity
- Zincs for Bichromate Batteries
- Zincs for Leclanché Cells, Daniell's Cells
- Zinc Resonators
- Zinc Steam Heaters
- Zinc Trough, Round
- Zoetrope
- Zonophone Disc Records
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