Avoirdupois system
Reference
measured.avoirdupois
Defines the Avoirdupois system of weights and their conversions to SI
Attributes: Base units
Pound (Unit): The base unit for the Avoirdupois system
Attributes: Units of mass ("weight")
Grain (Unit): 1/7000 lb.
Dram (Unit): 1/256 lb.
Ounce (Unit): 1/16 lb.
LongHundredweight (Unit): 112 lb.
LongTon (Unit): 2240 lb.