Metric Conversion Act – Anniversary

Dec 23, 1975. The Congress of the US passed Public Law 94 168, known as the Metric Conversion Act of 1975. This act declares that the SI (International System of Units) will be this countrys basic system of measurement and establishes the United States Metric Board, which is responsible for the planning, coordination and implementation of the nations voluntary conversion to SI. (Congress had authorized the metric system as a legal system of measurement in the US by an act passed July 28, 1866. In 1875, the US became one of the original signers of the Treaty of the Metre, which established an international metric system.)