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
aces atwhich the fit should be made, andthepitch. A very common methodof measuring the diameter is bythe Brown and Sharpe screw-thread micrometer caliper shownin Fig. no. The measuring fin-gers of this instrument are groundto the angle of the thread, the Vsbeing truncated to insure they donot reach… … Fig. US- Limit gage for screw-threads. GAGES 129 and the measurement is made by means of the usual mi-crometer over the outsides of the wires. Complete tablesof readings for standard threads have been worked out for thissystem/ which is admirably adapted to the gaging of largescrews and worms, an…
Machine-shop practice
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