aneroid barometer
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Related to aneroid barometer: mercury barometer
aneroid barometer:
see barometerbarometer, instrument for measuring atmospheric pressure. It was invented in 1643 by the Italian scientist Evangelista Torricelli, who used a column of water in a tube 34 ft (10.4 m) long.
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aneroid barometer
[′an·ə‚rȯid bə′räm·əd·ər] (engineering)
A barometer which utilizes an aneroid capsule. Also known as aneroid.
aneroid barometer

aneroid barometer
a device for measuring atmospheric pressure without the use of fluids. It consists of a partially evacuated metal chamber, the thin corrugated lid of which is displaced by variations in the external air pressure. This displacement is magnified by levers and made to operate a pointer