From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specification table detailing nominal and actual dimensions, area, length, and other properties for various listed parts.
| Identifier | ExFiles\Box 88\5\ scan0132 | |
| Date | 21th June 1935 guessed | |
| COLUMN HEADERS: LIST NO, NOMINAL O/D, NOMINAL I/D, ACTUAL O/D, ACTUAL I/D, MEAN AREA. □, MEAN DIA (APPROX), AVERAGE LENGTH, CORRESS NO OF CONVS, APPROX MOVEMENT, WALL THICKNESS S/W, WALL THICKNESS D/W, MAX PRESSURE S/W, MAX PRESSURE D/W, LOAD TO COMPRESS 1/8" S/W, LOAD TO COMPRESS 1/8" D/W DATA ROWS: 1, 13/32", 1/4", 13/32", 1/4", .0893, 21/64", 1/2", 228, 3/8", .004, -, -, -, -, - 1A, 9/16", 11/32", 9/16", 3/8", .1795, 15/32", 1", 23, 1/8", .004, -, -, -, -, - 2, 3/4", 1/2", 3/4", 1/2", .3191, 41/64", 2", 28, 3/8", .005, -, -, -, -, - 3, 1", 23/32", 1", 11/16", .5783, 55/64", 2", 21, 3/8", .005, .005, -, -, -, - 4, 1 1/8", 3/4", 1 1/8", 3/4", .7179, 31/32", 2", 22, 3/8", .005, .005, -, -, -, - G, 1 1/4", 15/16", 1 1/4", 27/32", .8931, 1 1/16", 2", 19, 3/8", .005/.007, .005/.007, -, -, -, - 7, 1 3/8", 1", 1 13/32", 15/16", 1.1217, 1 3/16", 2 3/8", 20, 7/16", .005/.007/.009, .005/.007, -, -, -, - 8, 1 1/2", 1", 1 1/2", 1 1/16", 1.3269, 1 19/64", 2 1/2", 22, 1/2", .005/.007, .005/.007, -, -, -, - 10, 1 5/8", 1 1/16", 1 21/32", 1 1/8", 1.5742, 1 27/64", 2 1/2", 18, 1/2", .005, -, -, -, -, - 11, 1 3/4", 1 3/16", 1 3/4", 1 1/4", 1.8162, 1 33/64", 2 7/16", 19, 5/8", .0055/.007, .0055/.007, -, -, -, - 12, 1 13/16", 1 5/16", 1 13/16", 1 9/32", 1.9347, 1 37/64", 2 3/8", 20, 1/2", .006, .006, -, -, -, - 14, 2", 1 7/16", 2", 1 7/16", 2.3336, 1 23/32", 2 1/4", 16, 1/2", .006/.009, .006/.009, -, -, -, - 15, 2 3/16", 1 1/2", 2 3/16", 1 21/32", 2.9564, 1 15/16", 2 1/2", 17, 1/2", .006, .006, -, -, -, - 16, 2 3/8", 1 3/4", 2 3/8", 1 3/4", 3.3602, 2 1/16", 2 1/2", 17, 9/16", .006, .006, -, -, -, - 18, 2 7/8", 2 7/32", 2 7/8", 2 3/16", 5.1255, 2 9/16", 1 7/8", 13, 1/2", .009/.010, -, -, -, -, - 19, 3", 2 13/32", 3", 2 5/16", 5.7087, 2 23/32", 1 13/16", 12, 7/16", .008, -, ->, -, -, - 19A, 3 3/8", 2 5/8", 3 11/32", 2 5/8", 6.9343, 2 31/32", 1 3/4", 12 (SW) 10 (DW), 3/8", .007, .007, -, -, -, - 19B, 3 1/2", 2 11/16", 3 1/2", 2 25/32", 7.8485, 3 3/16", 1 1/2", 9 1/2, 3/8", .006, -, -, -, -, - 20, 4 3/8", 3 3/8", 4 3/8", 3 3/8", 11.054, 3 3/4", 1 5/8", 9 1/2, 3/8", .010, -, -, -, -, - 21, 4 3/8", 3 7/16", 4 7/32", 3 7/16", 12.050, 3 29/32", 1 5/8", 10, 3/8", .008, -, -, -, -, - 21A, 4 3/4", 4", 4 3/4", 4 3/32", 15.046, 4 3/8", 1 5/8", 10, 1/2", .009, -, -, -, -, - 21B, 5", 4 1/2", 5 3/32", 4 23/32", 17.387, 4 23/32", 1 5/8", 10, 3/8", .009, -, -, -, -, - | ||