https://www.nist.gov/publications/permissible-metric-only-labeling-includes-proposed-amendments-fair-packaging-and
Permissible Metric-Only Labeling; Includes Proposed Amendments to the Fair Packaging and Labeling...
Feb 17, 2017 - The United States adopted the metric system for use in trade and commerce in 1866.
to the fairmetric onlyproposed amendments