Tower Weights
Tower Weights :
The weight system used as the basis for English coinage during the medieval era; it is named for the Tower of London, where the Royal Mint was located. The system was based on the tower pound of 5400 grains (about 0.7714 avoirdupois pounds or 349.91 grams). The pound was divided into 12 ounces, and each ounce contained 20 pennyweight, making the pound equal to 240 pennyweight. (This structure was later echoed, in a reversed way, by the traditional English monetary system, in which the pound was divided into 20 shillings and each shilling into 12 pence.) In 1527, Henry VIII abolished the tower pound in favor of the slightly larger troy pound (see troy weights, below)
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