two grams of stainless steel are enough to conquer gravity
It was probably in 1795 that watchmaker Abraham-Louis Breguet invented something that would continue to rank among the highlights of fine watchmaking two centuries later: The tourbillon, named for the French word for whirlwind. The lightweight tourbillon cage contains the watch’s entire oscillating and escapement system, which revolves around its own axis during a predefined length of time. This continual rotation compensates for errors in a

Thierry Albert of the Nomos manufacture in Glashütte developed and constructed the tourbillon
mechanical watch’s oscillating system that are caused by gravity by constantly rotating the balance and balance spring. With the direction constantly being changed, gravity no longer has an effect. This horological trick enhances precision, especially in pocket watches, which spend most of their existence in one vertical position.