ROMAIN GAUTHIER – LOGICAL ONE
The independent brand updates the fusee-and-chain system invented in the 15th century to tackle the constantforce issue with a new material and component. The key principles remain: The bicycle chain-like mechanism coils and uncoils simultaneously at either end to ensure steady torque and energy transmission. However, the watchmaker has fortified the system with a chain of low-friction and hard-wearing synthetic rubies, as well as a snail cam in place of a cone-shaped fusee, which relieves stress on the chain.
The traditional cone-shape fusee is replaced by a slow-rotating snail cam, which allows energy to be transmitted in a straight line and using just one
short line of chain
Strength of the chain is improved
with synthetic rubies and a new snap-clip system to
join the links