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 139
Fig. III.—Wire methodof measuring screw threaddiameters. 128 METHODS OF MACHINE SHOP WORK … Fig. Application of the wire method to the gaging of worm threads. methods have been devised by which to measure the elementsindividually. The most important elementsare the diameter as measured onthe inclined surfaces of the threads,because these are the surfaces atwhich the fit should be made,…
Machine-shop practice
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