American machinists' handbook and dictionary of shop terms : a reference book of machine shop and drawing room data, methods and definitions (1914)
Colvin, Fred H. (Fred Herbert), 1867-1965, Stanley, Frank A. (Frank Arthur), b. 1874 · New York : McGraw-Hill book company ; London : Hill · leaf 669
Screw Thread, Acme 29 degree Standard — no. threads per inch d = depth = i P + -oio-f = flat on top of thread = p x .3707The Acme screw thread is practically thesame depth as the square thread and muchstronger. It is used extensively for leadscrews, feed screws, etc. Screw Thread, British…
Machine-shop practice
Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.