The pièze () is the unit of

pressure Pressure (symbol: ''p'' or ''P'') is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled ''gage'' pressure)The preferred spelling varies by country and eve ...

in the

metre–tonne–second system of units The metre–tonne–second (MTS) system of units was invented in France (hence the derived unit names '' sthène'' and '' pièze'') where it became the legal system between 1919 and 1961. It was adopted by the Soviet Union in 1933 and abolished the ...

(mts system), used, e.g., in the former

Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

1933–1955. It is defined as one

sthène The sthène (; symbol sn), sometimes spelled (or misspelled) sthéne or sthene (from ), is an obsolete unit of force or thrust in the metre–tonne–second system of units (mts) introduced in France in 1919. When proposed by the British Associa ...

per

square metre The square metre ( international spelling as used by the International Bureau of Weights and Measures) or square meter ( American spelling) is the unit of area in the International System of Units (SI) with symbol m2. It is the area of a square ...

. The symbol is pz. :

References

{{DEFAULTSORT:Pieze Obsolete units of measurement Units of pressure Non-SI metric units Metre–tonne–second system of units