GREUBEL FORSEY DOU­BLE BALANCIER

The National - News - Luxury - - WATCHES -

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.

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