Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The long and short hundredweight are both descended from the French avoirdupois weight system, which became established in England in Late Medieval times. For some history on how the British and American units diverged from each other, or why the British unit is 112 lbs, see Avoirdupois. In brief, British custom came to widely use the Stone weight, which is 14 pounds, and wished for the hundredweight unit to be in whole integers of Stones -- and 100 divided by 14 is not an integer. The Stone was not one of the avoirdupois units in Medieval France, and never became customary in the British American colonies or the USA. In 1824 in the UK, new weights and measures legislation made it illegal for merchants to use the word hundredweight in the sense of a hundred pounds. A merchant could be sued for fraud for doing so. In 1879, the hundred pound weight was re-legalized for trade in the UK under the name "cental", in response to legislative pressure from UK merchants who were importing corn and tobacco from the USA.

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