54

G. Cussons, Ltd., The Technical Works, Lower Broughton,

Manchester, and 231, Strand, London, W.C.

Models and Apparatus for Teaching Practical Mathematics and Theoretical Mechanics.

Tripod Capstan Block System (Fig. 1) is a combination of stands and fittings which are standardised and interchangeable, and capable of being built up and adapted to a great variety of experiments.

FIG. 1.

The rectangular brass block (Capstan Block) contains various standard holes and screws to which fittings such as pulleys, hooks, knife-edges, studs, &c. may be attached for the purposes of the experiments. The number of experiments possible exceeds 50.

Ribbon (Atwood’s) Machine.

(Cussons and Johnson’s Patent.)

This machine is used to determine the acceleration of a falling body due to gravity or to a known force acting on a known mass.

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