15 USC 208
15 USC 208
§ 208 - Variations
CHAPTER 6— WEIGHTS AND MEASURES AND STANDARD TIME › SUBCHAPTER III— STANDARD GAUGE FOR IRON AND STEEL
In the practical use and application of the standard gauge esablished [Fn: So in original. Probably should be “established”.] in section 206 of this title a variation of 2½ percent, either way may be allowed.