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 109
Fig. 14.—Patent Odhner of 1891. Fig. 15.—Odhner Machine. In the second half of the last century the Russian engineer, W. T. Odhner,invented and constructed the first model of the calculating machine of the pin wheel and cam disc type, now universally known as the Brunsviga. Odhners idea, viz. the…
