STICKBAROMETER Baromètre A Chevallier Ing.r Opticien Rue de la Bourse, 1 Ca. 1835
Signed: Baromètre A Chevallier Ing.r Opticien Rue de la Bourse, 1 Dated: circa 1835
Register plates The stick barometer, which is signed BAROMÈTRE A Chevallier Ing.r Opticien Rue de la Bourse, 1, has a silvered brass register plate. It has a barometer scale at the top, calibrated from 26 to 30 Paris inches, subdivided in twelfths, with opposite the corresponding weather conditions. There is a vernier with a blued-steel setting hand for accurate reading, which can be operated by a brass knob to the side.
The date Paris 1768 is engraved in the register plate under the weather conditions. This refers to an extremely low atmospheric pressure recorded in this year.
Below this scale is an alcohol thermometer, with a scale calibrated in degrees Fahrenheit to the left and in degrees Réaumur to the right. A number of minima and maxima with the corresponding places and years are engraved, such as the extreme temperature for ‘Syrie’ at 145˚ Fahrenheit and Paris at 103˚, the lowest temperature recorded in Paris in 1838 being -3˚ Fahrenheit.
Case The mahogany-veneered case of this stick barometer has mouldings to the top as well as a firegilt brass cast brass ornament. The wide barometer reservoir, typical for French barometers, is protected by beautiful firegilt cast brass ornaments. Below the spiral-shaped thermometer reservoir is a chased firegilt brass ornament.
Height: 103 cm Width: 17 cm Depth: 7 cm
The maker Jean-Gabriel-Auguste Chevallier/Chevalier was born in 1778. He had his workshop in Paris at Tour de l’Horlogerie No.1 from 1800 and later at Place du Pont Neuf No. 15. Later instruments are signed ‘Maison de l’Ingenieur Chevalier’ until well into the 19th century.
– Bert Bolle, Barometers in beeld, Lochem, 1983, p. 48 and 236 note 112.
– Bert Bolle, Barometers, Haarlem, 1978, pp. 238 and 239.
– Th. H. van Cotthem, 200 Jaar Antieke Barometers 1670-1870, Schiedam, 1977, p. 147.