Pièze
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The pièze (French:[pjɛz]) is the unit of pressure in the metre–tonne–second system of units (mts system), used, e.g., in the former Soviet Union 1933–1955. It is defined as one sthène per square metre. The symbol is pz.
one pièze= 1kilopascal = 10millibars ≈ 9.869×10−3standard atmospheres ≈ 7.501torrs ≈ 0.1450pounds per square inch ≈ 0.2953inches of mercury