A meterological type of barometer uses a column of mercury that is
supported by atmosperic pressure. The height of this column varies
with the atmospheric pressure and was at one time measured off
in inches in the range of about 28 to 31 "inches of mercury".
The scale now used is Millibars both in aneroid and mercury barometers.
First answer by Peter. m. worthing. Last edit by Peter. m. worthing. Contributor trust: 28 [recommend contributor]. Question popularity: 18 [recommend question]
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Answers.com > Wiki Answers > Categories > Hobbies and Collectibles > Antiques > Antique aneroid barometer has a scale of 28 to 31 what units are these?
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What are the units or a barometer? What is an aneroid sphygmomanometer? What units does an aneroid barometer measure in?
