An explanation of the Cartier Astroregulateur

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Unveiled at SIHH earlier this year, the Cartier Astroregulateur is a new look at the age old problem of gravity induced variations of the balance frequency and amplitude. Carole Forestier’s solution is to fix the balance to the rotor, ensuring it always reverts to an upright position when the watch is vertical. I explain the watch with the help of diagrams from Cartier.

– SJX

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