Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 255
ix. The dis-tance in the direction of the axis traversed by a point in one revo-lution is called the pitch. Pitch in the case of a thread is itsadvance in the direction of the axis in one revolution. In Fig. 281 the proportions of the several common threadforms are shown to a large scale. 250…
Mechanical drawing
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