§ 206.
For the purpose of securing uniformity the following is established as the only standard gauge for sheet and plate iron and steel in the United States of America, namely:
Number of gauge | Approximate thickness in fractions of an inch | Approximate thickness in decimal parts of an inch | Approximate thickness in millimeters | Weight per square foot in ounces avoirdupois | Weight per square foot in pounds avoirdupois | Weight per square foot in kilograms | Weight per square meter in kilograms | Weight per square meter in pounds avoirdupois |
|---|
0000000 | 1/2 | .5 | 12.7 | 320 | 20.00 | 9.072 | 97.65 | 215.28 |
000000 | 15/32 | .46875 | 11.90625 | 300 | 18.75 | 8.505 | 91.55 | 201.82 |
00000 | 7/16 | .4375 | 11.1125 | 280 | 17.50 |
([Mar. 3, 1893, ch. 221, § 1], [27 Stat. 746].)