Barometer

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“The barometer is simply a pressure gauge that registers the pressure of the air. In this case the cup and tube at the bottom are protected by a brass or iron casing. At the top of the tube is a graduated scale. Attached to the casing is an accurate thermometer for determining the temperature of the outside air at the time the barometric observation is taken.” — Hallock, 1905

Galleries

Meteorology

Source

V. I. Hallock I.C.S. Refrence Library (Scranton: International Textbook Company, 1905)

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