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 61
Fig. 34.—-Third application of the sine bar method of originating angles. one already shown in Fig. 31—the gage being here shown inthe act of gaging a taper reamer. The sine bar provides, perhaps, the most generally usefulmethod of originating angles. It is extremely simple, quite … Fig. 35.—Adjustable angle plate for originating angles. accurate and, unlike the two-disc method, does not requirespecial construction for each case. Against it is the fact that,in each of the repeated trials necessary to adjust it, the positionsof both pins are naturally disturbed and this adds to…
Machine-shop practice
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