Units of measurement in France before the French Revolution

In France there were originally many local variants, the lieue was between 3.268 km and 5.849 km in Beauce in Provence.

Values ​​from 1799, after the meter was defined to a length of exactly 443.296 Parisian lines. Before all measurements are subject to slight variations.

Coulomb used the pied de roi in his manuscripts. Isaac Newton used the Paris foot in his Philosophiae Naturalis Principia Mathematica.

Surfaces

Volume

Weight

The French pounds probably goes back to the Carolingian pound. Actually, it should be exactly twelve tenths Karl pounds.

The pound of poids de marc, as its official name, was at its replacement by the decimal end of the 18th century ( 9216/18, 82715 =) about 489.5058466 g

Counting measure

Metric system

By Jean -Antoine Chaptal, the metric system was developed after the Revolution in France from 1791 and introduced on 15 November 1800, when système legal. The length of the standard meter with exactly 443.296 Parisian lines was defined. To increase the acceptance of the people, allowed Napoleon's decree on the introduction and the use of old names with metric values ​​equal magnitude.

The prefix for Myria 10,000 was later abolished; similar it is to one day hectoliters (100 ), Deka (10 ), decimal (0,1) and centimeters ( 0.01) fare. Also called a cubic meter quite regularly stère ( Rochester ) and for larger areas was the base unit of the atmosphere ( Ar) and not the square.

1800

Système usul

On 12 February 1812, the use decimal units were supplemented by others which are closer to the earlier sizes but still have fairly round metric values ​​. This système usul was abolished on July 8, 1837 of the year 1840.

1 livre usuelle = 384 scrupule

Credentials

• Ancient weights and measures (France)