Question

describe the working of an aneroid barometer ​

Answer 1

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An aneroid barometer in close-up. You can clearly see the spring that makes the pointer rise or fall as the pressure changes. The sealed metal box is immediately behind the spring. ... Instead of having a pool of mercury that the atmosphere pushes down on, they have a sealed, air-tight metal box inside.

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Answer 2

Answer:

An aneroid barometer is built around a sealed box (blue, sometimes called an aneroid cell) that expands or contracts with increasing pressure. As it moves, it pulls or pushes a spring (red) and a system of levers (orange), moving a pointer (black) up or down the dial (yellow).