The difference is that an aneroid barometer is an instrument that measures air pressure without using liquid and a mercury barometer is and instrument used to measure air pressure using liquid mercury
An aneroid barometer, invented by the French 19th century engineer and inventor Lucien Vidie, uses a small, flexible metal box called an aneroid cell. This aneroid capsule (cell) is made from an...
A mercury barometer has a glass tube with a height of at least 84 cm, closed at one end, with an open mercury-filled reservoir at the base.whileAn aneroid barometer,invented by the French 19th...