Patek Philippe Reference 5950 Mode D'emploi page 4

Haute horlogerie at its very finest
Patek Philippe's caliber CHR 27-525 PS is the
world's thinnest monopusher rattrapante chro-
nograph with column wheel control. Its height:
5.25 mm. Not least, this accomplishment is due to
the ingenious design of the continuously running
60-minute counter. Its innovative configuration is
responsible for the slimmer silhouette and at the
same time, it equalizes the torque differences be-
tween the running and stopped states of the chro-
nograph. The three chronograph wheels (driving,
clutch, and seconds wheels) are another exclusive
feature of the caliber CHR 27-525 PS movement.
Their novel patented toothing geometries reduce
wear and optimize power transmission within the
chronograph mechanism.
The pinnacle of artisanship
The caliber CHR 27-525 PS is a classic split sec-
onds chronograph construction with two column
wheels that, as always in Patek Philippe timepieces,
are crowned with polished caps. The bridges à
l'ancienne are meticulously finished with polished
chamfers and Geneva striping. Every caliber is in-
dividually hand-crafted by master watchmakers in
the Haute Horlogerie workshops. Each component is
individually filed, chamfered, polished, adjusted,
and finished. Then, the watchmaker performs the
so-called repassage en blanc – a trial assembly pro-
cedure – to carefully check all functions. After-
wards, the entire movement is taken apart again,
cleaned, reassembled, lubricated, and adjusted.
These ancestral production methods result in horo-
logical masterpieces that exceed the expectations of
even the most discerning connoisseurs.