Assertion: gallon's ounce | /r/ObjectUse | used in international trade
Facets:
Source sentences:
text: Various ounces were used over the centuries, including the Tower ounce, troy ounce, avoirdupois ounce, and ounces used in international trade, such as Paris troy, a situation further complicated by the medieval practice of "allowances", whereby a unit of measure was not necessarily equal to the sum of its parts.