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 115
y either the white or red figures of the register. Thisis performed without any special gearing by the hand of the operator. Thisautomatic device affords a perfect check to the operator. The tens carrying mechanism of the Brunsviga, also of the Brunsvigula,extends now up to twenty digits, whereas… … Fig. 28. Fig. 29. by means of a single pressure of the finger. This Automatic Carriage improve-ment is of great advantage, since it ensures the carriage being moved intothe position desired, without necessitating the movement being watched bythe operator. The calculating principle of the Brunsviga…
