Units of measurement
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Torr (torr)
Pounds per square inch (psi)
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Torr (torr)
Torr (torr) — a unit of pressure based on the height of a mercury column, equal to 1/760 of an atmosphere. Used in vacuum technology.
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.