When Was the Metric System Made Legal in the U.s. Was This Mandatoryngocthanh
1889 – The Metre Convention contains provisions for the supply of a prototype of one metre and one kilogram. For example, the United States, Great Britain and the other signatories to the Metre Convention have each been given a prototype metre and a kilogram to comply with agreed measurement standards. Congress provided each state with copies of the national metric prototype standards. 1994 – The Fair Trade Packaging and Labelling Act (FPLA) is amended to add a metric unit requirement for most consumer products. Now, I`m happy to announce that in the last issue, although still “dual united” here and there, almost all units were SI-metric, including the most ignored unit of all, the joule. A new American football game was attempted in metric units in 1977.  This trend has not increased. 2008. This version of NIST SP330 was released as the US version of 7. Publication of the edition of the SI brochure.
NIST has already published versions under the same title and publication number that are consistent with previous editions of the SI brochure (I have the 2001 edition coinciding with the 6th edition. He also published brief summaries in the Federal Register following the publication of new editions of the SI brochure (at least 1991 and 1998). Congress has delegated to the Secretary of Commerce its authority to determine the system of weights and measures, and NIST is preparing these documents for signature. Meanwhile, as globalization increased, U.S. companies competed with international interests. More and more foreign customers buying U.S. products demanded that they be delivered, labeled and produced in metric units. And when U.S. companies built new plants in Europe or Asia, they faced the challenge of standardizing U.S.
measurements or the metric system – decisions with enormous financial consequences. Gasoline and diesel fuel are sold from the U.S. gallon, and fuel consumption is reported in miles per gallon (MPG). In most other countries, fuel consumption is measured in litres per 100 kilometres or kilometres per litre. The official standard of the European Union is liters per 100 km.  Stations at Point Roberts, Washington, a short, non-contiguous peninsula accessible from the rest of Washington State only by crossing into Canada, sell their gasoline from distributors calibrated to be distributed in litres. Gasoline is distributed to Puerto Rico in liters. Automotive crankcase oil is sold per leg, antifreeze per gallon, brake fluid per ounce (liquid) and air conditioning refrigerant per ounce (mass). Wiper replacement blades are measured in inches. I believe the younger generation of Americans is much more open to metrics than many older people. If the Democrats keep the White House in November and take back the Senate (and maybe even the House of Representatives, if you believe in miracles), there is certainly a chance to change the FPLA to allow for pure metric. This would be a first step toward metrical awareness among Americans of all stripes.
In 1981, the New York Times reporter attended an anti-metric party where Wolfe, in his usual white linen, judged a contest “Most beautiful foot.” USA Weightlifting uses metric units to measure weight. 1965 – Britain begins the transition to the metric system in its trade and commerce as a condition of membership of the European Common Market. This movement creates a sense of urgency in the United States to convert as well.</ In 1793, Thomas Jefferson requested artifacts from the France that could be used to adopt the metric system in the United States, and Joseph Dombey was sent from France with a standard kilogram. Before reaching the United States, Dombey`s ship was diverted from its course by a storm and captured by pirates, and died in captivity at Montserrat.  Proponents of the metric system in the United States often claim that "the United States, Liberia and Burma (or Myanmar) are the only countries that have not adopted the metric system." That statement is not correct with regard to the United States, and it is probably also correct with regard to Liberia and Burma. The United States adopted the metric system in 1866. What the U.S. has failed to do is restrict or prohibit the use of traditional units in areas that affect ordinary citizens: construction, real estate transactions, retail, and education. The U.S.
has not made the crucial transition from “soft metric” to “hard metric,” so “1 pint (473 ml)” becomes “500 ml (1,057 pint),” the traditional equivalent fading into smaller font sizes and eventually disappearing.