How Much Is a Hundredweight?

I watch enough British telly and movies and read enough British mysteries to know that a "stone" is 14 pounds.  But until today I didn't know a "quarter" is 2 stones. (Prices of grain in Ireland in 1848 were quoted in quarters.) And a hundredweight is four quarters, making it 112 pounds, at least in the UK. (This relates to the "long ton" and the "short ton", etc.) This site has the conversions.  One of the many things for which we must thank the Founding Fathers is their partial metrification of US measures.