On 12 February 1812, France stopped using the metric system and started using a new system called "mesures usuelles". The new system was based on many of the old pre-metric units. The old units were redefined to be round numbers or fractions of the withdrawn metric units. For example the "livre" (pound) was reintroduced and changed from 489 grams to 500 grams. The "toise" was redefined as 2 metres. The "toise" contained 6 "pied" (feet), changed from 324.8 mm to of a metre (333.33 mm). The "pied" had 12 "pouces" (inches) and the "pouce" had 12 "lignes".
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