sure wish I knew how to post links, the mendenhall order states: "The US will in the future regard the international prototype metre and kilogramme as fundamental standards, and the customary units, the yard and pound will be derived therefrom in accordance with the act of july 28, 1866. The definitions you are referring to is appendix 6, which delineates the conversions in a table form. This was approved by the Secretary of the treasury. Which makes a lot of sense because the purpose of this order was to ensure we got a fair shake in the international market. (MONEY) All it really means is pretty much nothing, much like many of our policies. (sorry to get off topic, but this is one of my favorite trivia items)
Last edited by brokenhead; 10/31/2015 3:28 PM.