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"inch" and "ounce" are derived). After the fall of the Roman Empire, some Roman traditions were continued but others fell into disuse. In 790 Charlemagne attempted to reform the units of measure in his domains. His units of length were based on the [[toise]] and in particular the toise de l'Écritoire, the distance between the fingertips of the outstretched arms of a man. The toise has 6 pieds (feet) each of 326.6 mm.

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