Audemars Piguet Royal Oak Carbon Concept2895 Instructions For Use Manual - page 9
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2. A
bout t
he w
atc
h
Eng
lish
Functions
The Audemars Piguet Calibre 2895 qualifies as an extra-
ordinary exploit. With its twin-barrel system ensuring
a 10-day power reserve, this hand-wound movement
features a tourbillon, a power-reserve indicator and a
high-performance chronograph.
The tourbillon
The most outstanding watchmakers have been
striving to improve timing accuracy since the
second half of the 18
th
century. The desire to
achieve an identical setting for a timepiece
in all positions is a major challenge. Under
the Earth’s pull, the tiniest variations in
equilibrium have a negative influence on
the regulating part (balance / balance-
spring) when positioned vertically, thus
causing running differences in the watch.
In 1801 the watchmaker Abraham Louis Breguet
thought up a tourbillon regulating system that
balanced the running differences in all positions.
The operating principle has remained largely the same
to this day : the escapement parts (wheel, pallet and
balance) are held in a movable frame rather than being
fixed in the movement. By rotating on its axis every
minute with the escapement parts, this frame enables
all the parts to change position constantly, thereby
offsetting the running differences caused by the
effects of gravitation.
185 years later, in 1986, Audemars Piguet successfully
fitted this system for the first time into a production
wristwatch with an ultra-thin automatic mechanical
movement. The Manufacture in Le Brassus has since
built on this success by presenting many tourbillon
models combined with all watch complications.
The Manufacture, still one of the select few mastering
the secrets of this complication, offers more than 25
different tourbillon movements.
The chronograph
We are often called upon to be able to measure the time
separating two events. This makes the chronograph an
indispensable instrument. Its invention was the work of
a watchmaker in the Vallée de Joux, Henri-Féréol Piguet,
who designed and created this system in 1845.
Since the end of the 19
th
century, Audemars Piguet
has developed and produced some of the world's
most sophisticated timepieces with a dazzling array
of features. The Audemars Piguet Tourbillon,
Chrono graph Royal Oak Concept Carbon watch
with manual wind, consisting of 384 pieces,
works in perfect harmony with this age-old
philosophy.