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 384
TIM Single Slide Machine. THE PRESTOCALCULATOR For Discounts and Interests Englisli Patent 2j,jij—ipu. … EXACT :: NOISELESS :: RELIABLE Reckons discounts and interests three times asquicklv as Tables. Results as low as 1/16 °/ can 1 I/O be read directly from the Scale without anyfurther calculation .... The PRESTO Calculator has been in constantuse in two large banks for the past two years withhighly…
