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 233
those in the work and, moreover, in the same plate 222 METHODS OF MACHINE SHOP WORK they are all of the same diameter. As they are subject to butlittle wear they are frequently not bushed. With the holes properly located in the master plate, the boringof the jig holes becomes a simple matter of… … FiG. 210.—Locating holes in a master plate. ter as the holes in the master plate. The master plate and jigplate being dowelled together, they are mounted in the lathewith the projecting end of the plug entering one of the holes inthe master plate. The jig hole is then bored to its requiredsize and…
Machine-shop practice
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