Watch family · Complication
Tourbillon Watches
VerifiedWatches in which the entire escapement and balance assembly is mounted in a rotating carriage, originally intended to average out positional timekeeping errors caused by gravity, most beneficial when a watch remains largely in one orientation (as a pocket watch typically did).
Movement & mechanism
- A rotating carriage, commonly completing one revolution per minute, holding the balance, hairspring, lever and escape wheel
- Carriage geared into the going train so it also indicates seconds in many designs
- Considerably more complex to construct and adjust than a fixed escapement of equivalent quality
Identification
- A visible rotating cage, usually through a dial aperture or display back, holding the balance and escapement
- Often marketed prominently given its prestige and complexity
Terminology
- Carriage (cage) — the rotating frame holding the escapement
- Flying tourbillon — a tourbillon carriage supported from below only, without an upper bridge, for an unobstructed view
Known variations
- Fixed-carriage tourbillon
- Flying tourbillon
- Multi-axis tourbillon
Pocket-watch ancestry
The tourbillon was invented and patented by Abraham-Louis Breguet in 1801 specifically for pocket watches, which spend most of their time in a small number of predictable positions (e.g. pendant up in a waistcoat pocket); its adaptation to wristwatches, where orientation constantly changes, followed roughly a century and a half later and changes the complication's practical rationale considerably.
Collecting notes
A flagship prestige complication; because a tourbillon's positional-averaging benefit is most relevant to a stationary pocket watch, its value on a constantly-moving wristwatch is often regarded by horologists as more a mark of craftsmanship and prestige than a functional necessity — a point of ongoing debate that should not be elided.
Photographs
Photographs are illustrative examples of the type, not necessarily the exact object described. Verify details against the source file page.
Sources & references
- Daniels, G., Watchmaking
Where sources disagree, the disagreement is stated rather than resolved silently.