What is Avoirdupois system?
The '''avoirdupois system''' is a system for measuring weight. It is based on a [[Pound (mass)|pound]] of 16 [[ounce]]s or 7,000 grains (453.59 grams). It is the system used in the [[United States]]. It is still used by many people in [[Canada]], [[United Kingdom]], and [[Ireland]]. {{science-stub}} [[Category:Imperial units]]