The machinist and tool maker's instructor, containing an easy method of calculating and laying out difficult work in the machine shop .. (1896)
Genung, Edward. [from old catalog] · New York [Press of J. B. Savage, Cleveland] · leaf 187
It is 12° on one side and 40° on the other side, as shown; theside marked 12° should always point to the center of thework, and, if two pieces having different diameters are to bemilled, the table with the work will have to be moved in or outto suit that particular size, because setting it for any…
Machinery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
