Glossary
Annual calendar (watch)
A full or partial simple calendar that takes automatically into account months with less than 31 days or leap years, but not of leap years. It must be adjusted once a year.
See complication.
Related themes:
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.