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
only, Automatic Carriage. TrinliS-TripleX, Three Machines in One with 20 figures tens carrying capacity. 55T67A75 x 6537 = 1544 69311425 This Rule-of-Three Calculation worked out in a Single Operation : every Factor, Dividend, Divisor, Quotient, and total Result, beingvisible simultaneously. Free… … 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,…
