What is the tourbillon, and how is it significant in watch design? We look at one of the most ingenious ‘complications’ ever invented The tourbillon, now over 200 years old, is one of the most exquisite and complex mechanisms ever conceived. Intended to solve a problem in time-keeping by the application of physics, it became an engineering challenge which still absorbs watchmakers – and fascinates collectors. It was on June 26th in 1801, or as...