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Le pouce (symbole : ″ (double prime) ou po au Canada francophone) est une unité de longueur datant du Moyen Âge. Sa valeur dimensionnelle a varié suivant les époques, les régions et les pays. Depuis 1959, à la suite d’un compromis anglophone, le pouce anglais — aussi nommé « pouce technique international » — vaut 2,54 cm ...
French units of measurement. France has a unique history of units of measurement due to its radical decision to invent and adopt the metric system after the French Revolution. In the Ancien régime and until 1795, France used a system of measures that had many of the characteristics of the modern Imperial System of units but with no unified system.
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pouce cube: 1 ⁄ 48 ~19.84 ml The French cubic inch. pied cube: 36 ~34.28 L The French cubic foot. In ancient times, a cubic foot was also known as an amphora when measuring liquid volume.
25.4 mm. A fire hydrant marked as 3-inch. The inch (symbol: in or ″) is a unit of length in the British Imperial and the United States customary systems of measurement. It is equal to 1 36 yard or 1 12 of a foot. Derived from the Roman uncia ("twelfth"), the word inch is also sometimes used to translate similar units in other measurement ...
- in, ″ (the double prime)
The pound per square inch (abbreviation: psi) or, more accurately, pound-force per square inch (symbol: lbf/in2 ), [1] is a unit of measurement of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force with magnitude of one pound-force applied to an area of one square inch.
- 6.894757 kPa
- psi, lbf/in²
The metric system is a number of different systems of measurement with length based on the metre, mass on the gram, and volume on the litre. [1] This system is used around the world. It was developed in France and first introduced there in 1795, 2 years after the execution of Louis XVI.
Unit of measurement. Units of measurement give standards so that the numbers from our measurements refer to the same thing. Measurement is a process that uses numbers to describe a physical quantity. We can measure how big things are, how warm they are, how heavy they are, and many other features.
