Aneroid barometer

An aneroid barometer uses a small, flexible metal box called an aneroid cell. This aneroid capsule (cell) is made from an alloy of beryllium and copper.

Mercury barometer

A mercury barometer has a glass tube of at least 33 inches (about 84 cm) in height, closed at one end, with an open mercury-filled reservoir at the base.

Water-based barometer

This concept of "decreasing atmospheric pressure predicts stormy weather" was postulated by Lucien Vidie ....