Dating back to the middle 1600s, early mercury barometers consisted of a glass tube sealed at the top but open at the bottom. This tube was partially filled with mercury and suspended in an open ...

Mercury Stick Barometer made by Horn & Thornthwaite instrument makers. The body is made of oak with displays for the barometer and integral thermometer of engraved bone. The Barometer is calbrated ...

Toriccelli also went on to develop the mercury barometer, an instrument used to measure atmospheric pressure. A barometer also monitors variations in atmospheric pressure. As air becomes thinner ...