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The watchmakers' lathe, its use and abuse; a story of the lathe in its various forms, past and present, its construction and proper uses (1903)

Goodrich, Ward L. [from old catalog] · Chicago, Hazlitt & Walker · leaf 72

An illustration from The watchmakers' lathe, its use and abuse; a story of the lathe in its various forms, past and present, its construction and proper uses, 1903, leaf 72 — motion. Supposing that our lever is so con-structed as to increase the error one hundred fold, and theend of the lever moves one-fiftieth of an inch, by dividingone-fiftieth of an inch by one hundred we have the onefive-thousandths of an inch that our work is out of trueat the point supporting the… … Fig. 42. Yoke for Testing Lever. tool, and by means of a gauge set the jaws so they are justone-tenth of an inch, or whatever proportion the lever ismade for, apart; then by revolving the work the error maybe read off from the scale. The chucks which we have been considering have allhad the grip…

Clocks and watches · Lathes

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