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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 138
Plug and ring screw threadgages. screw may be bodily too large as measured on the inclined sur- … FiG. no.—Micrometer for measuring screw threads.Machine-shop practice
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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