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- Q183 - Navigation General: Oceans
146. Which name is given to the pressure-sensitive element of an aneroid barometer?
A Sylphon cell is the evacuated, flexible metal capsule within an aneroid barometer that responds to atmospheric pressure changes. Aneroid barometers do not use mercury; instead, they rely on a mechanical element, specifically a Sylphon cell, to measure pressure. The other options describe different instruments or concepts inconsistent with the function of an aneroid barometer's pressure-sensitive element.
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