Methods of machine shop work : for apprentices and students in technical and trade schools (1914)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York : McGraw-Hill · leaf 228
ations where the jig holes are required.The buttons are small cylinders of hardened steel of exactlythe same diameter with holes through them endwise and withthem go small cap screws of a diameter somewhat less thanthat of the holes through the buttons. The jig having been planed, the tool maker… … Fig. 203. Fig. 202. The button method of spacing holes. Fig. 201 and, using a parallel strip and micrometer as in Fig. 202,they are adjusted to the exact position desired. The jig isthen strapped to a lathe face plate as in Fig. 203 and carefullypositioned until the tool makers indicator stands…
Machine-shop practice
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