Barometers Realm

The traditional mechanism is driven by a 7-centimeter single sensitive aneroid capsule with a spring-tensioned C-type spring. The bridge features a rectangular base, and the screws supporting the strong iron carriage, fixed across the chamber, have square blue heads. These mechanical features are also characteristic of the Dubois & Casse brand.

On the back of the barometer is the Lion et Guichard logo, depicting an anchor with the initials L&G at its base, surrounded by a circle within the anchor, symbolizing the aneroid barometer, and inscribed with the word "Barometre." Lion et Guichard was a French manufacturer of aneroid barometers in the second half of the 19th century. They positioned themselves as successors to Lucien Vidie, the inventor of the aneroid barometer in 1844, and operated at 8 Rue Rocroy in Paris, which had previously been Vidie’s workshop. In 1863, Vidie transferred his production and the rights to the term "aneroid" to Breguet. Breguet later sold its clockmaking division to its manager, Mr. Brown, and in 1870, sold the barometer division to Lion et Guichard. The company later operated under the name Guichard for a time before disappearing from the market.