Vacuum Gage 1


Vacuum Gage 1 : (Techn) An instrument for measuring subatmospheric pressures, usually expressed in inches of water or millimeters of mercury. Note: Pressures above 1 mm Hg are measured by liquid-column manometers, diaphragms, bellows, and Bourdon gages. Lower pressures are best determined indirectly by measuring thermal conductivity or ionization
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