ALAIN BRIEUX

MICROSCOPES

l s. d.

Grand Model Van Heurck Microscope, by W. Watson & Sons,

Ltd., with :—

Rackwork coarse adjustment.

Horizontal lever fine adjustment.

Interchangeable monocular and Wenham binocular bodies, the monocular body being fitted with double draw-tubes, one having rackwork adjustment.

Mechanical stage fitted with mm. scale and reading by vernier to o.i mm., sliding bar to mechanical stage, rotation to stage fully divided to degrees, having rotary motion by hand and by rack and pinion, centring screws to stage, clamp to centring motion of stage.

Compound substage with rackwork focussing and fine adjustment to focussing of the substage, best centring motions on dovetail bearings, rackwork rotation to substage.

Plane and concave mirrors.

Rough plate to mechanical stage for protection of movements when liquid preparations, etc., are examined.

Eyepieces, Holoscopic series, one pair X 7, best 1.27 capped.

One student size, Holoscopic series, x 10.

Adapter between student size eyepiece and 1.27" diameter eyepiece.

Objectives, Holoscopic, x\", 16-mm. N.A. 0.45.

6a objective, by E. Leitz, Wetzler (fluorite series).

Holoscopic, 2-mm. N.A. 1.37.

All corrected for 250-mm. tube length.

Funnel stop for 2-mm. Holoscopic objective.

Universal condenser, N.A. 1, achromatised, in sub stage mounting, with iris diaphragm and stop-carrier, with box of stops.

Triple nose-piece, by C. Baker.

Best mahogany cabinet, with carrying handles on side of case and fitted with inner mahogany case carrying objectives and accessories.

Price . . . . . . . . . . . . . . . . . . . . 80 0 0

The outfit is an exceptionally fine one and in perfect condition.

Grand Model Van Heurck Microscope, by W. Watson & Sons, Ltd., with :—

Interchangeable monocular and Wenham binocular bodies. The monocular body has rackwork and sliding draw-tubes, and with nose-piece tube length from 160 mm. upwards is obtainable.

The Wenham binocular body is fitted with interchangeable low-power and high-power Wenham prisms ; it is also provided with a Nicol prism removable by sliding from the optic axis. Rack-work draw-tubes control the interpupillary adjustment. Rackwork coarse adjustment to body.

Males-Watson two-speed fine adjustment, giving motions of 250 and 70 for a complete rotation of the milled heads. Mechanical stage with complete rotation, fitted with double sliding-bar, the upper sliding-bar being divided to accommodate various sizes of slides. The movement of the mechanical stage also is fitted with scales and reads by verniers. The rackwork to the stage is fitted with rackwork fully divided and reading by pointer. There are centring screws to the rotation and clamps to the centring.

Interchangeable plain plate for mechanical stage for rough work. The substage is provided with rackwork rotation, centring screws, condenser mount having iris diaphragm and rackwork motion to the iris diaphragm.

The controlling milled heads of the substage are mounted above the level of the stage practically in the same plane as the controlling milled heads of the mechanical movement of the stage.

M 0 X , V\(^4^

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Le texte affiché peut comporter un certain nombre d'erreurs. En effet, le mode texte de ce document a été généré de façon automatique par un programme de reconnaissance optique de caractères (OCR). Le taux de reconnaissance estimé pour cette page est de 98,98 %.

La langue de reconnaissance de l'OCR est l'Anglais.

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