In the late 1700s, he devised a solution: a kind of anti-gravity chamber that he called a tourbillon, a French word meaning ‘whirlwind’. A single-axis tourbillon in motion. This gif shows two ...

It may only run for a brief time, and it’s too big for use in an actual wristwatch, but this 3D-printed tourbillon is a great demonstration of the lengths watchmakers will go to to keep ...

This marvel was its first mechanical complication, ingeniously combining a tourbillon and a constant-force mechanism on a single axis-a groundbreaking feat in horology that earned the Chronometry ...