ferdinand berthoudJust a short four years ago in 2015, Chopard’s co-president Karl-Friedrich Scheufele introduced the world to his pet project, an “independent” boutique brand named for Ferdinand Berthoud (1727-1807), a historical Swiss maker of marine chronometers. ferdinand berthoudThe brand-new FB 1L Chronometer, which displays the age and phases of the moon taken as two measurements, enable this watch to offer the moon-age accuracy needed for actual astronomical use. This patented mechanism was inspired by an equation-of-time system developed by Ferdinand Berthoud in 1752 based on a feeler spindle following the equation cam. The moon phase is so accurate that it would only deviate by one full day in 577 years of continuous operation. ferdinand berthoudThe technical moon indications come in alongside a tourbillon with patented direct-drive seconds and a regulator-style indication of the seconds, and the movement is certified for chronometer accuracy by the independent Official Swiss Chronometer Testing Institute (C.O.S.C.).

Source: Forbes March 29, 2019 13:41 UTC