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 101
previous machines the measuring 90 METHODS OF MACHINE SHOP WORK screw acts not only to traverse itself but as a bearing to carryits own weight and that of the graduated wheel. In this ma-chine the shank of the screw is extended at each end to formbearings which support the weight of the parts,… … Fig. 63.—Section of headstock of the Newall measurinj^ machine. THE MICROMETER CALIPER The micrometer caliper, which was first made an article ofcommerce by the Brown and Sharpe Manufacturing Companyin 1867, is essentially a small portable measuring machine. Justas the Pratt and Whitney measuring…
Machine-shop practice
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