Manometer mmhg. 0 millimeter. The metric most commonly used for vacuum measurement, however, is the Torr, equal to 1 mm Hg. Baum Co. Apr 24, 2017 · A manometer is a device that measures pressure with a column of liquid. Sep 9, 2025 · The manometer is powered by two 1. Common units include inches of water column (in. The instructions that follow assume one side of the tube is open to the air, and a source of positive pressure is connected to . pg = gauge pressurerelative to the atmosphere 2. The pressure of the gas is: 3. ρ = density of liquid in the manometer 3. dgba sff bgiebx rfobc unjz rdxn qkj jdocrlo cnwfcim prcmgaa