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A barometer is a device used to measure the pressure of the atmosphere. A mercurial barometer, picture shown, uses mercury to show the atmospheric pressure, much like it did for a thermometer.
KeywordsBarometer, mercurial barometer, mercury barometer, what is a barometer, what does a barometer look like, what does a barometer do, barometer example
International Correspondence Schools A Textbook on Mechanical and Electrical Engineering (Scranton, PA: International Textbook Company, 1897)
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