Definition:Troy/Ounce
< Definition:Troy(Redirected from Definition:Troy Ounce)
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Definition
The troy ounce is a troy unit of mass.
\(\ds \) | \(\) | \(\ds 1\) | troy ounce | |||||||||||
\(\ds \) | \(=\) | \(\ds 20\) | pennyweight | |||||||||||
\(\ds \) | \(=\) | \(\ds 480\) | grains | |||||||||||
\(\ds \) | \(=\) | \(\ds 1\) | apothecaries' ounce | |||||||||||
\(\ds \) | \(\approx\) | \(\ds 31 \cdotp 1\) | grams |
Historical Note
The troy ounce is still in legal use for transacting in precious metals such as gold.
It is seen that a troy ounce is the same size as the apothecaries' ounce, while weighing approximately $1 \cdotp 1$ ounces avoirdupois.