This section is from the book "The English And American Mechanic", by B. Frank Van Cleve. Also available from Amazon: The English And American Mechanic.
Measures 56 by 28 inches, and is ruled by the wight per sheet The numbers run from 8 to 18 Russi in lbs per sheet 8 Russian pounds equal 7.2 English pounds; 9 = 8.1 lbs.; 19= 9 1bs.; 11=10 lbs.; 12 = 11.2 lbs. etc. 100 Russian lbs . equal 80 lbs. English.
Thickness in parts of an inch. | Iron. | Brass. | Lead. | |
1/16 | 25 | 29 | 27 | 3.7 |
1/8 | 50 | 5.8 | 5.5 | 7.4 |
3/16 | 75 | 87 | 82 | 11 1 |
¼ | 100 | 116 | 10.9 | 148 |
5/16 | 125 | 145 | 13 6 | 185 |
3/8 | 15 0 | 174 | 10 8 | 22.2 |
Thickness in parts of an inch. | Iron. | Copper. | Brass. | Lead. |
7/16 | 17 5 | 908 | 190 | 25 9 |
½ | 200 | 23.2 | 21.8 | 29.6 |
5/8 | 25.0 | 28.9 | 27 1 | 37.0 |
¾ | 30.0 | 34.7 | 325 | 44 4 |
7/8 | 86.0 | 40.4 | 37 9 | 57.8 |
1 | 40 0 | 46 2 | 43 3 | 69.2 |
 
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