Glossary
Bagnolet (calibre)
The extra-flat watch movement known as a Bagnolet is an "inverted" calibre, where the dial is on the geartrain side rather than the bottom plate side.
So that the time can be read correctly, the gears therefore turn the opposite way. The flattest Bagnolet calibres do not exceed a millimetre and a half in height.
Research
Research
For research into the first Rieussec chronographs, the Fondation de la Haute Horlogerie wishes to locate this piece, made between 1820 and 1830.
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