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 393
COMPUTING TAPERS In the table on pages 362 and 363 the quantities when expressed ininches represent the taper per inch corresponding to various anglesadvancing by 10 minutes from 10 minutes to go degrees. If an angle isgiven as, say, 27^ degrees and it is desired to find the corresponding taperin… … Fig. 6. — Taper per Inch and Corresponding Angle the tabulated quantity by 12, and in this particular case would be0.4894 X 12 = 5.8728. Where the included angle is not founddirectly in the table, the taper per inch is found as follows: Assumethat the angle in question is i2j degrees, then the…
Machine-shop practice
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