Episode 2 of 3

Legal Definitions and Tables

When
1866
Where
United States
Part of
Metric Act of 1866

The Act established official conversion tables from customary units and defined the metric system for legal use.

The Act included a now-obsolete definition of the metric system and tables of units. These tables provided official conversions from United States customary units, which had been standardized in 1832. The legislation legally protected the use of the metric system in commerce from lawsuit.

Sources

  1. Metric Act of 1866 Wikipedia, revision of 2024-12-27
  2. United States customary units Wikipedia, revision of 2026-09-29

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.