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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 96

An illustration from Modern instruments and methods of calculation : a handbook of the Napier Tercentenary Exhibition, 1914, leaf 96
0I£.3^567B9fc _ Fig. 2. be increased to six. When the handle H has been adjusted the wheel isturned as a whole, and the knobs K knock the counter as they pass it. This neat device is found in the popular Brunsviga machine. Carrying.—The mechanism in an adding machine undertakes a task whichis… … Fig. 3. orders of magnitude seriatim : as a general rule the machine can attend toall the additions simultaneously. If the counter of the machine is watchedwhile the handle is turned slowly, the digits are seen to change graduallybut independently. On the other hand, when carrying has to be dealt…

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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