Also known as: bar.
BAR has various meanings in the Governmental & Military category. Discover the full forms, definitions, and usage contexts of BAR in Governmental & Military.
A barometer is a scientific instrument that is used to measure air pressure in a certain environment.
Governmental & MilitaryInstrument for measuring atmospheric pressure. It may be calibrated in pounds per square inch, in inches of mercury in a column in millimeters or kPa. OR To check the atmospheric pressure a device is used called barometer OR Â Instrument for measuring atmospheric pressure. OR An instrument used to measure atmospheric pressure. A standard mercury barometer has a glass column about 30 inches long, closed at one end, with a mercury-filled reservoir.
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