Barometer Thermometer - France - 19th Century

BAROMETER THERMOMETER
France, 19th century 
Wood, mahogany veneer, brass and glass
H. 104 cm, W 13.5 cm

Mercury column barometer with siphon centred between two comparative thermometers: the first is an alcohol thermometer with two scales: Centigrade and Réaumur; the second, with Fahrenheit and Réaumur scales, is a mercury thermometer.
Complete with tube and mercury bowl protected by gilded brass.

Metal plate marked on the upper part: "Charpentier Opticien Passage Choiseul 40 à Paris".

Text and photos © FCP CORIDON

Catalogue number: 4529