☙
☙
The first column contains the diameters in inches of the proposal of 1841; the second those of the proposal of 1857.
| 1841 | 1857 | pitch |
|---|---|---|
| — | 0.100 | 48 |
| — | 0.125 | 40 |
| — | 0.150 | 32 |
| — | 0.175 | 24 |
| — | 0.200 | 24 |
| — | 0.225 | 24 |
| ¼ | 0.250 | 20 |
| — | 0.275 | 20 |
| 5/16 | 0.300 | 18 |
| — | 0.325 | 18 |
| — | 0.350 | 18 |
| ⅜ | 0.375 | 16 |
| — | 0.400 | 16 |
| — | 0.425 | 14 |
| 7/16 | 0.450 | 14 |
| — | 0.475 | 14 |
| ½ | 0.500 | 12 |
| — | 0.525 | 12 |
| — | 0.550 | 12 |
| — | 0.575 | 12 |
| — | 0.600 | 12 |
| ⅝ | 0.625 | 11 |
| — | 0.650 | 11 |
| — | 0.675 | 11 |
| — | 0.700 | 11 |
| ¾ | 0.750 | 10 |
| — | 0.800 | 10 |
| ⅞ | 0.875 | 9 |
| — | 0.900 | 9 |
| 1 | 1.000 | 8 |
| 1⅛ | ||
| 1¼ | 7 | |
| 1⅜ | 6 | |
| 1½ | 6 | |
| 1⅝ | 5 | |
| 1¾ | 5 | |
| 1⅞ | 4½ | |
| 2 | 4½ | |
| 2¼ | 4 | |
| 2½ | 4 | |
| 2¾ | 3½ | |
| 3 | 3½ | |
| 3¼ | 3¼ | |
| 3½ | 3¼ | |
| 3¾ | 3 | |
| 4 | 3 | |
| 4¼ | 2⅞ | |
| 4½ | 2⅞ | |
| 4¾ | 2¾ | |
| 5 | 2¾ | |
| 5¼ | 2⅝ | |
| 5½ | 2⅝ | |
| 5¾ | 2½ | |
| 6 | 2½ |
Institution of Civil Engineers.
Minutes of Proceedings, Session 1841.
London: The Institution, 1841.
Page 159.
F. Reuleaux.
The Constructor. A Handbook of Machine Design.
Henry Harrison Suplee, translator.
New York: The Engineering Magazine, 1906.
Page 51.
home | tools index | search |
contact 
|
contributors |
help | privacy | terms of use
Copyright © 2002 Sizes, Inc. All rights reserved.
Last revised: 6 June 2004.