The earliest recorded systems of weights and measures originate in the 3rd or 4th millennium BC. == History of units == === Units of length === Before the establishment of the decimal metric system in France during the French Revolution in the late 18th century, many units of length were based on parts of the human body. The Nippur cubit was one of the oldest known units of length.
The earliest recorded systems of weights and measures originate in the 3rd or 4th millennium BC. == History of units == === Units of length === Before the establishment of the decimal metric system in France during the French Revolution in the late 18th century, many units of length were based on parts of the human body. The Nippur cubit was one of the oldest known units of length.
Source: Wikipedia "History of measurement" · CC BY-SA 4.0
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