Illustrated catalogue and price-list of drawing and tracing papers, sun print papers and equipments, drawing instruments and materials, surveying instruments, accessories, etc. / Kolesch & Company. (1917)
Kolesch & Company · Kolesch & Company · leaf 97
ale TOR COMPUTING THE STRENGTH OF WOODEN BEAMS ) I i I ( ( I ) Ullil M! i 8 • 1 idililit I I I I I I I I I I I I I IIIIIMII II I I 1 I ;; ;l;l;l; r;„M;„„; 4 l «.....«.!. ..1.*.1. 2 fry.*™.? », ?.,■»■ I ,L,y „•„!.USti i ■» »j5»« 1 >t HNlH IH .VII I 4 1 1 1 1 ) t it aim » m it « KHim 2845 The Wager… … For all computations involving teeth of gear wheels, their permissible stress,pitch, velocity, carrying load, etc. An instrument so simple that verv little practiceis necessary to become familiar with it. No reference tables or diagrams are neededin its use, as within this slide rule is embodied…
Drawing instruments · Surveying -- Instruments
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