Metre–tonne–second 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.
The base units of the MTS system are as follows:
- 1 m3 ≡ 1 kL
- 1 t = 103 kg = 1 Mg
- 1 sn = 1 t·m/s2 = 103 N = 1 kN
- 1 sn·m = 1 t·m2/s2 = 103 J = 1 kJ
- 1 sn·m/s = 1 t·m2/s3 = 103 W = 1 kW
- Metre-kilogram-second system of units (MKS)
- Foot-pound-second system of units (FPS)
- Quadrant-eleventh-gram-second system (QES)
- "System of Measurement Units". IEEE Global History Network. Institute of Electrical and Electronics Engineers (IEEE). Retrieved 2011-03-21.
- "Notions de physique - Systèmes d'unités" [Symbols used in physics - units of measure] (in French). Hydrelect.info. Retrieved 2011-03-21.