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A Lange & Sohne Tourbograph Pour le Merite Mens Watch 702.025
Collection

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A Lange & Sohne Tourbograph Pour le Merite Mens Watch 702.025 View
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A Lange & Sohne Tourbograph Pour le Merite Mens Watch 702.025
AdditionalInfo :

Brand :           A Lange & Sohne ( http://a-lange-sohne.watches-collection.com/
)
Gender :          Mens
Code :           702.025
Also Called :       $ 702025
Movement :        Manual Wind
Bezel :           Fixed
Case Material :   Platinum
Case Diameter :   14.3 mm
Dial Color :           Silver (solid)
Crystal :         Sapphire Crystal
Clasp :           Leather - Black Crocodile
Water Resistant :

Includes boxes, papers & original warranty.<br><br>The manually wound
L903.0 calibre is extraordinary. It comprises 465 parts - 1097 parts
with the chain. It has 41 rubies, and is precision-adjusted to 5
positions. Six gold chatons are screwed to the untreated German silver
plates and bridges. The gorgeous sapphire-crystal caseback showcases
the tourbillon, the chronograph (rattrapante) mechanism, and fuse-and-
chain transmission.<br><br>Axial play is limited by two diamond
endstones. The screw balance is shock-proofed on both sides. The
hairspring terminal curve is bent according to a precise mathematical
algorithm assuring isochronous oscillation. The chronograph
rattrapante mechanism, as with other Langes, is controlled by two
column wheels.<br><br>Lange has considered every last detail. All
edges have been chamfered and polished. Even hidden surfaces are
circular-grained to perfection, or meticulously decorated with
beautiful patterns (taking up to five days and involving 14 different
processes). The finishing processes of the tourbillon bridge alone,
take two days to complete.<br><br>A fully wound mainspring of a
traditional mechanical watch delivers more torque than when it is
unwound resulting in rate inaccuracies. The magnificent fuse-and-chain
transmission of the Tourbograph Pour le Merite is Lange's elegant
solution to eliminate this phenomenon. It is, however, so intricate to
produce, that only Lange's master watchmakers have the required
expertise to integrate it with the wristwatch mechanism. It is driven
by the spring barrel around which it winds. The 633-part chain
transmits its pulling power to the going train as it unwinds from the
stepped cone-like fuse. When the mainspring is fully wound and
exerting full force, the chain pulls at the shorter lever. When the
tension of the mainspring is nearly depleted, the chain pulls at the
longer lever. The result: uniform power transmission, regardless of
how the mainspring is wound. But sometimes the mainspring is being
wound, and the cone rotates backwards. What then? Lange's master
engineers have thought of that too. To prevent the watch from stopping
while being wound, a tiny planetary gear train has been integrated
inside the fusee assuring uninterrupted delivery of power.<br><br>The
master watchmakers of Lange have also decided to offset the disruptive
gravitation forces on the balace wheel. To that end, they have
integrated a tourbillon, a patented Breguet development that was
developed in the early 19th century. It comprises the balance, the
pallet lever and the escape wheel all housed in a rotating cage. The
cage rotates once a minute on its own axis. The Tourbograph's
superlative tourbillon - comprising 84 parts - is visible through an
aperture at 6 o'clock. It has a mass of a mere 0.5 grams.<br><br>The
Tourbograph Pour Le Merite is the sequel to the original Lange
Tourbograph and is the most complex Lange wristwatch made to date. It
commemorates the 15th anniversary of the reopening of the Lange
manufactory. Each sublime watch takes a staggering 30-days to assemble
and only one of these timepieces will leave the manufactory per month
until 101 watches have been made - 51 pieces in platinum and 50 in
gold. This remarkable watch is an aficionado's fantasy and will surely
be the highlight of any collection.<br><br>The 2006 Geneva Watchmaking
Grand Prix recognized the incredible Pour le Merite Tourbograph by
awarding it and the firm A. Lange & Shne the Special Jury
Prize.<br><br>The TOURBOGRAPH 'Pour le Mrite' was chosen by readers of
the German Sunday newspaper Welt am Sonntag and specialist watch
magazine Armbanduhren as 'Watch of the Year 2007'<br><br>All 50
Platinum pieces are spoken for by original owners at the Lange
factory. This brand new piece has no official US Retail. Prices are
based on the Euro at $1.46 = 1 EURO.

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A Lange & Sohne Saxonia Watches Collection :
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A Lange & Sohne Tourbograph Pour le Merite Watches Collection :
http://a-lange-sohne.watches-collection.com/a-lange-sohne-tourbograph-pour-le-merite-watches.html