ED209[Purist]
7307
BVLGARI Collection Daniel Roth Tourbillon Chrono Rattrapante
BVLGARI COLLECTION DANIEL ROTH
TOURBILLON CHRONO RATTRAPANTE
Extreme technical sophistication: the Tourbillon Chrono Rattrapante, Calibre DR 8300,
is
a concentrated blend of fine watchmaking elements combining the most
sophisticated short-time measuring device with a Tourbillon regulator.
The
mechanism, housed in its rose gold double-ellipse case, is equipped
with a split-second chronograph function displayed by the two central
seconds hands:the classic chronograph hand and the superimposed
split-second hand. When the chronograph push button is activated, the
two hands begin running at the same time and are perfectly synchronised.
Stopping and resetting brings them both to a halt and repositions them. Thes plit-second
function is separately activated when, once the central seconds hand has been started,
the
additional co-axial push button on the crown is activated, thus
stopping the split-second hand while the chronograph hand continues
running. A second press on the split-second push button brings the
split-second hand back over the chronograph hand, and the two hands
continue to run thus, one on top of the other, until a third press on
the co-axial push button stops the split-second hand again. This
device serves to measure short times in events involving several
competitors, such as a track race, since one can stop
the split-second hand upon the arrival of each runner, thus facilitating observation,
before the temporarily stopped hand “makes up” for the time it has spent motionless.
This
fine traditional mechanism is coupled with the ultimate regulating
organ, the Tourbillon. Invented by Abraham-Louis Breguet, this device
serves to compensate for the differences in rate resulting from the
effect of gravity when the watch is in a vertical position.
In
order to counteract these negative effects, Breguet had the idea of
making the regulating organ rotate at a rate of one revolution
perminute in such a way that it moves
through all possible positions, thereby compensating for the
differences in rate stemming from the various positions and thus
enabling the watch to display a regular mean rate.
The quest for enhanced precision is the chief characteristic of the functions
of
the Tourbillon Chrono Rattrapante. They appear on its elegant
split-level dial of which the pure white upper part carries the
Tourbillon regulator. The black gold treated surface of the lower part
is vertically satin-brushed and bears the time indications: hours and
minutes on a small subdial at 7 o’clock, 30-minute chronograph counter
at 3 o’clock, and power-reserve at 5 o’clock. The central seconds
hands serving to display the split-second function are distinguished by
their colours: gold-plated for the chronograph hand,and blued for the
split-second hand.
This
creation presents an extremely beautiful and rare combination that is
bound to appeal to informed connoisseurs. A genuine measuring
instrument and as tunning example
of Fine Watchmaking.
Tourbillon Chrono Rattrapante, Calibre DR 8300 in a nutshell:
Mechanical
hand-wound movement, Tourbillon regulator, split-second chronograph,
date and power-reserve, Côtes de Genève and circular-grained finishing;
21,600 vph, 48-hour power reserve.
46 mm double ellipse case in 18-carat rose gold, crown and pushers in 18-carat rose
gold, transparent sapphire crystal caseback, water-resistant to 30 metres.
Convex split-level white lacquered and satin-brushed dial.
Alligator leather strap fitted with a triple-blade folding clasp in 18-carat rose gold.

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More good than bad....
By: aaronm : March 21st, 2010-18:18
I'd like it more without the PR I think but I do like the time dial down at 8 o'clock and the two colors/textures of the dial. I'd a bit undecided on the design of the tourbillon, I like the curves of the cage but I can't decide about the bridge and how i...