A FINE CHARLES X BAROMETER
A FINE CHARLES X BAROMETER

A FINE CHARLES X BAROMETER

c. 1825 France

Offered by Tarquin Bilgen

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A fine early 19th century verre eglomise mercury barometer in exceptional condition, the borders of red foil and gold around a white dial with blue centra ring and gold text around a central rosette and the dial, the lyre top with a intact thermometer on a gilt background surmounted with a star.

A mercury barometer has a glass tube with a height of at least 84 cm, closed at one end, with an open mercury-filled reservoir at the base. The weight of the mercury creates a vacuum in the top of the tube. Mercury in the tube adjusts until the weight of the mercury column balances the atmospheric force exerted on the reservoir. High atmospheric pressure places more force on the reservoir, forcing mercury higher in the column. Low pressure allows the mercury to drop to a lower level in the column by lowering the force placed on the reservoir.
Dimensions
Height 91.00 cm (35.83 inches)
Width 51.00 cm (20.08 inches)
Medium
verre eglomise
Tarquin Bilgen

Tarquin Bilgen
227 Ebury Street
London
SW1W 8UT
England

+44 (0)20-7259 0111
+44 (0)7966 398487
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