GREUBEL FORSEY DOUBLE BALANCIER

A world-first in watchmaking, this model’s 365 parts add up to a regulating system comprising two inclined oscillators – in different threedimensional planes, with variable inertia balance wheels – and escapements driven through a spherical differential that provides the average of their rates via the gear train to the time display. That will make sense only to the few, most notably the company’s mechanical egghead founders Stephen Forsey and Robert Greubel.