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 59
Fig. II. — Measuring U. S. Standard Threads D = outside diameter of thread.Di = root diameter measured in thread groove.n = number of threads per inch of length.d = depth of thread. p = distance from center to center of adjacent threads./ = width of flat on U. S. Standard thread.a = diam^eter of…
Machine-shop practice
Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.
