Definition:Troy/Pennyweight
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Definition
The pennyweight is a troy unit of mass.
Conversion Factors
\(\ds \) | \(\) | \(\ds 1\) | pennyweight | |||||||||||
\(\ds \) | \(=\) | \(\ds 24\) | grains | |||||||||||
\(\ds \) | \(\approx\) | \(\ds 1 \cdotp 56\) | grams |
Symbol
The symbol for the pennyweight is $\text {dwt}$.
This derives from the Latin denarius, which evolved into the (old) penny.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $24$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $24$