N.B. _The Imperial Standard Troy Pound_, established in 1758,
containing 5760 Grains, became, May 1, 1825, the ONLY _genuine
standard weight from which all other weights are to be derived,
computed, and ascertained_.
24 Grains make 1 Pennyweight
20 Pennyweights 1 Ounce
12 Ounces 1 Pound
The proportion that _Avoirdupois_ bears to _Troy_ Weight, from
which it is derived, is as 7000, the number of Troy grains in a
pound Avoirdupois, is to 5760, the grains in a pound Troy. The
Pound _Avoirdupois_ makes 14 oz. 11 dwt. and 16 grains _Troy_; and
9 pounds Avoirdupois are equal to nearly 11 pounds Troy.
⁂ By _Troy_ weight Jewels, Gold, Silver, &c. are weighed.