Name the two instruments used to measure air pressure:
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A barometer is any instrument that measures air pressure. Barometers come in two basic forms: the aneroid barometer and the mercury barometer. Aneroid barometers use cells that expand and contract as air pressure changes.
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Answer:
A barometer is any instrument that measures air pressure. Barometers come in two basic forms: the aneroid barometer and the mercury barometer. Aneroid barometers use cells that expand and contract as air pressure changes.
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