Difference between revisions of "Aneroid"
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Aneroid
A thin, disk-shaped box or capsule, usually metallic, partially
evacuated of air and sealed, which expands and contracts with
changes in atmospheric or gaseous
pressure.
The aneroid is the sensing and actuating element in various
meters or gages, such as barometers, altimeters, manifold-pressure
gages, etc; it is also the triggering or operating element in
various automatic mechanisms. A device similar to an aneroid,
but open to outside pressures, such as the capsule in an airspeed
indicator, is not commonly called an aneroid .
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
