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 383
Extract from letter receivedfrom the Rev. Irvine K. DR YOKOTAS RULE (Patent) ANDERSON : — If I were asked to to choose the best all-round Slide Rule for a student, I should have no hesitation in making the choice of a Yokota. LOGARITHMIC SLIDE RULES, JAKINS SURVEYORS RULE, ELECTRICAL SLIDE RULES,… … :: POINTS OF :: TIM MACHINES Easy Movement. Quietness. Key-plate with total and partialclearing- device. Removable figure slide and key-plate. Electric Machines can be workedby hand if desired. Unitas Keyboard Electric Drive Machine. TIM & UNITAS Calculating Machines 10 Norfolk Street, Strand,…
