The pound, ounce, and grain are the same as in Troy weight.

Avoirdupois Weight

Pound. Ounces. Drachms. Grains (Troy)

Grams.

1 = 16 = 256 = 7,000 =

453.60

1 = 16 = 437.5

28.35

1 = 27.34 =

1.77