What does a barometer measure?
A barometer is an instrument used to measure atmospheric
pressure. It can measure the pressure exerted by the atmosphere by
using water, air, or mercury. Pressure tendency can forecast short
term changes in the weather. Numerous measurements of air pressure
are used within surface weather analysis to help find surface
troughs, high pressure systems, and frontal boundaries.
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A barometer measures air pressure.
A barometer is an instrument that is used to measure atmospheric