Aneroid Barometer

(noun)

A device for measuring pressure, often specially calibrated for use as an altimeter, consisting of a box or chamber partially exhausted of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air.

Related Terms

  • Torr

Examples of Aneroid Barometer in the following topics:

  • Measurements: Gauge Pressure and the Barometer

    • Hydrostatic based barometers most commonly use water or mercury as the static liquid.
    • Another type of barometer is the aneroid barometer, which consists of a small, flexible sealed metal box called an aneroid cell.
    • The aneroid cell is made from beryllium-copper alloy and is partially evacuated.
    • A stiff spring prevents the aneroid cell from collapsing.
    • While the aneroid barometer is the underlying mechanism behind many modern pressure measuring devices, pressure can also be measured using more advanced measuring mechanisms.
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