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All categories/Antique barometers/Code 5578 French barometer
Antique barometers/5578-French barometer
Antique barometers/5578-French barometer
Antique barometers/5578-French barometer
Antique barometers/5578-French barometer
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Antique barometers/5578-French barometer
Antique barometers/5578-French barometer
Antique barometers/5578-French barometer
Antique barometers/5578-French barometer
Antique barometers/5578-French barometer
Antique barometers/5578-French barometer
Antique barometers/5578-French barometer
Antique barometers/5578-French barometer
Gift box
Antique barometers/5578-Gift box

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1499430074Code 5578 French barometerFrench barometer made in the mid-XIX century, complete with double thermometer (mercury and alcohol) and barometer with U shaped pipe containing mercury, mounted on a wooden board. Very good condition. Cm 15x4.5x106 (h) - inches 5.9x1.77x41.73 (h).

Mercury barometer is an antique measuring instrument and it was very used before the invention of aneroid barometer. A small iron or glass weight on the level of mercury in the short part of siphon, goes up and down together with the level of liquid. A thread connects weight and pulley and it’s kept tight by a counterweight. In the centre of pulley they are fixed two pointers: the first one moves on dial following changes of atmospheric pressure; the other one, fixed, makes possible to read changes of pressure by a regulation screw. On dial they are indicated seven atmospheric conditions. Barometric pipe and its mechanism are located in a space behind.

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Code 5578 French barometer

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