Troy Ounces
A unit of apothecary weight equal to 480 grains or one twelfth of a troy pound
Kilograms
The kilogram is the base unit of mass in the International (SI) System of Units, and is accepted on a day-to-day basis as a unit of weight (the gravitational force acting on any given object).
The kilogram is almost exactly equal to the mass of one litre of water.
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