Metre-tonne-second System of Units
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Metre%E2%80%93tonne%E2%80%93second System of Units

The metre-tonne-second or MTS system of units is a system of physical units. It was invented in France, hence the unit names sthène and pièze, and became its legal system between 1919 and 1961 ("décret" 5 May 1961, "Journal Officiel"). It was adopted by the Soviet Union in 1933 and abolished there in 1955. It was a metric and coherent system of units, much as SI and the centimetre-gram-second system (CGS), but with larger units for industrial use, whereas the CGS system was regarded as suitable for laboratory use only.[1][2]


The base units of the MTS system are:

Some common derived units:

See also


  1. ^ "System of Measurement Units". IEEE Global History Network. Institute of Electrical and Electronics Engineers (IEEE). Retrieved .
  2. ^ "Notions de physique - Systèmes d'unités" [Symbols used in physics - units of measure] (in French). Retrieved .

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