One inch was originally the length of three [[barley]] corns, which form a distance approximating the breadth of the bridge of an adult human's nose. Today the inch is defined in terms of the centimeter.
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One inch was originally the length of three [[barley]] corns, which form a distance approximating the breadth of the bridge of an adult human's nose. Today the inch is defined in terms of the [[centimeter]] with 2.6 centimeters per inch. An inch is also one-twelth of a foot.