American machinists' handbook and dictionary of shop terms : a reference book of machine shop and drawing room data, methods and definitions (1914)
Colvin, Fred H. (Fred Herbert), 1867-1965, Stanley, Frank A. (Frank Arthur), b. 1874 · New York : McGraw-Hill book company ; London : Hill · leaf 40
egree worm thread. The sketches, Figs. 7 and 8, show plainly the diflference be-tween threads of the same pitch in the two systems. The sectional MEASUREMENT OF V-TOOLS II views are of threads of one-inch linear pitch drawn to scale to theproportions given by the thread formulas in connection with… … h .6345-^ ^3655^ Fig. 7 ^Acme 29-Degree Screw Thread
Machine-shop practice
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