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Modern instruments and methods of calculation : a handbook of the Napier Tercentenary Exhibition (1914)

Horsburg, E. M. (Ellice Martin), Napier Tercentenary Exhibition (1914 : Edinburgh, Scotalnd) · London : G. Bell · leaf 141

An illustration from Modern instruments and methods of calculation : a handbook of the Napier Tercentenary Exhibition, 1914, leaf 141
Fig. 52.—[\ actual size.) Con-struction of the crank. … Fig. 53.—(f actual size.) Effacer. sion in the top of the machine. This then takes up any further strain on thecrank, and possible injurious effects are avoided. A reverse turn of thecrank, which the internal construction of the machine will not allow, is pre-vented by a pin which is pressed by a…

Napier, John, 1550-1617 · Calculators · Mathematical instruments

Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.

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