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 98
Fig. 5q.—Rear side. … Fig. 6o.—Front side.Pratt and Whitney measuring machine. 88 METHODS OF MACHINE SHOP WORK microscope being provided for reading it. In this location ofthe scale the machine is unique. The lever action due to theposition of the measuring fingers above the bed causes thefingers to change position with…
Machine-shop practice
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