Patek Philippe 5372 Mode D'emploi page 4

VIRTUOSITY TIMES TWO
The caliber CHR 27-525 PS Q movement is a fur-
ther refinement of the CHR 27-525 PS, the world's
thinnest monopusher rattrapante chronograph
movement with column wheel control (height:
5.25 mm). It presents a classic configuration with
two column wheels and a number of technical
features such as a continuously running 60-min-
ute counter and new patented toothing profiles
that reduce wear and simultaneously optimize
the chronograph functions. To match the ultra-
thin construction of the chronograph mechanism,
Patek Philippe spared no effort to minimize the
thickness of the perpetual calendar module as well.
It was a formidable challenge, further complicated
by the small caliber diameter. Thus, the engineers
had to develop novel technical solutions, two of
which resulted in patent applications.
HAUTE HORLOGERIE AT ITS VERY FINEST
In keeping with venerable Patek Philippe tradi-
tions, the CHR 27-525 PS Q is a paragon of aesthet-
ics and craftsmanship. The bridges à l'ancienne
are meticulously finished with polished chamfers
and Geneva striping. Every caliber is individually
hand-crafted by master watchmakers in the Haute
Horlogerie workshops. Each component is indi-
vidually filed, chamfered, polished, adjusted, and
finished. Then, the watchmaker performs the so-
called repassage en blanc – a trial assembly proce-
dure – to carefully check all functions. Afterwards,
the entire movement is taken apart again, cleaned,
reassembled, lubricated, and adjusted. These an-
cestral production methods result in horological
masterpieces that exceed the expectations of even
the most discerning connoisseurs.