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Manometer
01
a device used to measure the pressure of gases or liquids in a closed system, typically by comparing it to atmospheric pressure
Example
A manometer indicated low tire pressure in the car.
Scientists use a manometer to measure the pressure inside laboratory vessels.
The plumber used a manometer to check the water pressure in the pipes.
The technician used a manometer to check the gas pressure in the heating system.
Weather forecasters use a manometer to measure atmospheric pressure changes.