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This unit is usually called the Truchet point in English. Prior to the French Revolution the Fournier point was also in use. It was 1 ⁄ 6 of a ligne or 1 ⁄ 864 of the smaller French foot. ligne: 1 ⁄ 144: 2.256 mm 88.81 thou 1 ⁄ 12 of a pouce. This corresponds to the line, a traditional English unit. pouce: 1 ⁄ 12: 27.07 mm 1.066 in 1 ...
During the early part of the twentieth century, the French introduced their own units of power – the poncelet, which was defined as being the power required to raise a mass of 100 kg against standard gravity with a velocity of 1 m/s, giving a value of 980.665 W. [16] [17] However, many other European countries defined their units of power ...
In both customary and imperial units, one foot comprises 12 inches, and one yard comprises three feet. Since an international agreement in 1959, the foot is defined as equal to exactly 0.3048 meters. Historically, the "foot" was a part of many local systems of units, including the Greek, Roman, Chinese, French, and English systems. It varied in ...
In Quebec, the surveys in French units were converted using the relationship 1 pied (of the French variety; the same word is used for English feet as well) = 12.789 inches (of English origin). Thus a square arpent was 5299296.0804 in 2 or about 36,801 ft 2 or 0.8448 acre.
The other units of length and mass, and all units of area, volume, and derived units such as density were derived from these two base units. Mesures usuelles (French for customary measures) were a system of measurement introduced as a compromise between the metric system and traditional measurements. It was used in France from 1812 to 1839.
Mesures usuelles (French pronunciation: [məzyʁ yzɥɛl], customary measures) were a French system of measurement introduced by French Emperor Napoleon I in 1812 to act as compromise between the metric system and traditional measurements. The system was restricted to use in the retail industry and continued in use until 1840, when the laws of ...
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The Paris inch could be subdivided into 12 Paris lines (ligne), and 12 Paris inches made a Paris foot. [1] The abbreviations are the same as for other inch and foot units, i.e.: for Paris foot a single prime symbol ( ′ ), for Paris inch a double prime symbol ( ″ ) and for Paris line a triple prime symbol ( ‴ ), [1]