Further to my USMA 21419 I have just found that the USA ratified the Convention du M�tre on 1878 September 27.
>Pat Naughtin asked in USMA 21405: >> >>When did the English pint change from 16 ounces = one pint to twenty ounces >>= one pint. I have seen a date of 1878, but I'm not sure of its validity. >> >>Pat Naughtin CAMS > > >The imperial gallon, and hence tne imperial pint, was established in 1824. >The imperial gallon was defined as 10 pounds of water at 62� f. This was >the British response to the metric system, and is the only factor of ten in >the imperial system. Further standarization against the cubic decimetre was >published in 1896.;The United Kingdom ratified the *Convention du M�tre* in >1884. I have not been able to find out what happened in 1878. > >Joseph B.Reid Joseph B.Reid 17 Glebe Road West Toronto M5P 1C8 Tel. 416 486-6071
