Marine & Scientific Barometers

The very earliest - 17th Century - mercury Barometers were in fact primitive altimeters used to determine the height of mountains. Technical developments in the early 18th and 19th Century enabled such instruments, albeit more sophisticated, to be employed in experiments in the upper Atmosphere ['Balloonists Barometers'] Similar Barometers were used by surveyors on every continent ['Mountain Barometers']

'Fortin Barometers' with visible reservoirs - were essential pieces of laboratory equipment for a hundred years from the 1860s. Sadly, today, supply outstrips demand...

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Please note that the 2009 EU Mercury regulations DO NOT affect antique barometers in any way.
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