tourbillon
Sign in to savethumb|280px|Tourbillon movement (:File:Stuhrling Tourbillon Movement.ogv|high resolution)
Article
13 sectionsContents
- Types of tourbillon
- Single axis tourbillon
- Double-axis tourbillon
- Double and quadruple tourbillons
- Triple-axis tourbillon
- Flying tourbillon
- Gyro tourbillon
- Modern tourbillon watches
- Improved affordability
- See also
- References
- Further reading
- External links
thumb|280px|Tourbillon movement (:File:Stuhrling Tourbillon Movement.ogv|high resolution)
In horology, a tourbillion () or tourbillon (; "whirlwind") is an addition to the mechanics of a watch escapement to increase accuracy. Conceived by the British watchmaker and inventor John Arnold, it was developed by his friend the Swiss-French watchmaker Abraham-Louis Breguet and patented by Breguet on 26 June 1801. In a tourbillon, the escapement and balance wheel are mounted in a rotating cage, with the goal of eliminating errors of poise in the balance giving a uniform weight.