I don't know about US, but this does need formal amendment to Weights and Measur...

		sanxiyn on May 17, 2019 \| parent \| context \| favorite \| on: An old artifact kept in a vault outside Paris is n... I don't know about US, but this does need formal amendment to Weights and Measures Act 1985 (current UK standard in force) Schedule 1 Part V, see http://www.legislation.gov.uk/ukpga/1985/72/schedule/1/part/....