FP Journe caliber 1506 CS

1506 CS description

Centrigraphe Souveraine

The hand-wound mechanical movement of the Centigraphe indicates elapsed times from a 100th of a second to 10 minutes, visible on 3 dials, each with a time scale in red and a tachometer scale in black.

The chronograph is started, stopped and zeroed by a rocker at 2 o’clock in the case band, instead of the usual buttons on either side of the crown. This ergonomic design, perfectly fitted to the wristwatch, is patented

A second patent was granted for the mechanism’s ingenious configuration, which effectively isolates the chronograph from the timekeeping function. This means the balance amplitude is unaffected when the chronograph is running. The hands of the 100th of a second counter, the 20 seconds, and the 10 minutes hand are driven by 2 different wheel trains, themselves driven by the centre of the mainspring (system patented for the Sonnerie Souveraine). The 1-second counter and the 20-seconds counter are driven by two wheel trains on either side of a single intermediate wheel driven by the barrel arbor (patented for the Sonnerie Souveraine). Another separate train of wheels, also driven by the barrel arbor, drives the 10-minutes hand.