Metric system of measurement.
CFR · 2024-01-01 · US · Title 2
(a) The Metric Conversion Act, as amended by the Omnibus Trade and Competitiveness Act (15 U.S.C. 205) declares that the metric system is the preferred measurement system for U.S. trade and commerce. (b) Wherever measurements are required or authorized, they must be made, computed, and recorded in metric system units of measurement, unless otherwise authorized by the Agreement Officer in writing when it has
official document · source cfr-2024 · id 2:§ 700.6