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2015-09-14T20:22:22+05:30
Barometer is used to measure pressure. Unit of pressure is bar.
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2015-09-15T03:26:37+05:30

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A simple barometer is used to measure the atmospheric air pressure at houses, laboratories or on top of hills etc.  It can also be used to know the altitude of a place, though approximately..

The knowing of pressure is important for knowing about climate changes , rains, cyclones etc.

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