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7,000 grain = 1 [[US Customary System of Units#Pound|avoirdupois pound]]
7,000 grain = 1 [[US Customary System of Units#Pound|avoirdupois pound]]
==International Yard and Pound Agreement ==
In the International Yard and Pound Agreement of 1959, "''the National Bureau of Standards and in counterpart standards group in Canada, United Kingdom, Australia, New Zealand, and South Africa''"<ref>[http://pubs.acs.org/doi/abs/10.1021/ac60146a732# ''Analytical Chemistry'', 1959, 31(2),pp 39A from February 1959]</ref> defined the value of the ''international grain'' as 0.00006479891 [[kilogram]], so the exact value of a troy ounce is 31.10348 [[gram]].
[[Category:Measurements]]
[[Category:Measurements]]
==References==
<references />