TITLE 15 - US CODE - SUBCHAPTER III - STANDARD GAUGE FOR IRON AND STEEL

15 USC 206 - Standard gauge for sheet and plate iron and steel

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: The same and no other shall be used in determining duties and taxes levied by the United States of America on sheet and plate iron and steel. But this subchapter shall not be construed to increase duties upon any articles which may be imported.

15 USC 207 - Preparation of standards by Secretary of Commerce

The Secretary of Commerce is authorized and required to prepare suitable standards in accordance with section 206 of this title.

15 USC 208 - Variations

In the practical use and application of the standard gauge esablished^[1] in section 206 of this title a variation of 21/2 percent, either way may be allowed.

[1] So in original. Probably should be “established”.