Units of measurement
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Pounds per square inch (psi)
Millibar (mbar)
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Pounds per square inch (psi)
Pound per square inch (psi) — a unit of pressure based on pounds of force applied per square inch. Primarily used in the USA and UK.
Millibar (mbar)
Millibar (mbar) — a unit of pressure equal to one-thousandth of a bar. Frequently used in meteorology to measure atmospheric pressure.