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TourbillonCancelling watch-rate errors caused by gravitational attraction ...The invention of the Tourbillon, patented in 1801, increased the accuracy of watches. When a watch's escapement is in a vertical position, the earth's gravity either accelerates or slows the balance movement, causing a rate gain or loss. The Tourbillon's mobile carriage, containing the balance and the escapement, effects one revolution per minute, thereby compensating performance variations. |
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Flying TourbillonBlancpain's self-winding calibre 25 features a one-week power reserve and a flying Tourbillon whose carriage is mounted on one side only, with no supporting bar, allowing better visibility through the cutout window at 12 o'clock. |
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