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Found 1 from your keywords: author=Thomas Jones
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A Companion to the Mountain Barometer
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Thomas Jones

The Englefield mountain barometer was designed to calculate altitude and was so easy to use that a reading could be taken out of the window of a carriage – provided the horses stood still. Using a bar of mercury, which fell in the lower air pressure of higher altitudes, the barometer gave readings accurate to one thousandth of an inch. By taking a mercury reading at two locations, the owner c…

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9781139226776
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