pressure = 1 pressure
Try converting from "vacuum" to atmosphere, bar, barie, barye, in H2O (inches of water), inhg (inches of mercury), mmHg (millimeters of mercury), pascal, pieze, psi (pounds per square inch), torr, or any combination of units which equate to "mass / length time squared" and represent calorific value volume basis, draft, energy density, pressure, radiant energy density, sound pressure, stress, vacuum, or volume basis calorific value.
vacuum = .00000987 atmosphere, .00001 bar, 10 barie, 10 barye, .00401463 in H2O (inches of water), .0002953 inhg (inches of mercury), .00750062 mmHg (millimeters of mercury), 1 pascal, .001 pieze, .00014504 psi (pounds per square inch), .00750062 torr.
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