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 226
^.08^-:m^ \\ 11 ao9a- ^ I O.MO^h.-, [<-C575- … Fig. -Base line drawing for use with laying out machines. the center of one of the principal holes. This hole being madefirst and the scale and vernier adjusted to read zero or an eveninch, the locating of the other holes becomes a simple matter. OTHER METHODS OF SPACING HOLES These machines…
Machine-shop practice
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
