MmHg

(Difference between revisions)

Revision as of 23:01, 23 April 2022

mmHgᵂ is "millimeters of Hg (Mercury)", a measure of vacuum. Originally defined as the extra pressure generated by a column of mercury one millimetre high, as read out by a Mercury pressure gauge.

Atmospheric pressure at sea level
760 mm Hg
29.9212 inches Hg
14.696 psi
1 bar

Vacuum gauge reading in Inches (inHg)