Universal Milling Machine Poster
Poster shows 1865 patent drawing of Joseph Rogers Brown's Universal Milling Machine. He invented it so he could quickly make any size twist drill. He also used the four-speed, 1,800-pound machine for spiral milling, gear cutting, and other work that previously required tedious hand operations. Part of the Machinists' Poster Series. 18" x 24" poster, printed on glossy poster stock.