Sunday, September 17, 2006

A. Lange & Sohne - Tourbograph

Platinum watch (41.2 mm diameter x 14.3 mm height) equipped with a Lange manufacture Calibre L903.0 movement, manually wound, hand assembled and decorated, plates and bridges of untreated German silver, precision-adjusted in 5 positions. 465 parts plus more than 600 chain parts, shock-proof glucydur-alloy screw balance, Nivarox 1 hairspring, 21,600 semi-oscillations per hour, 36-hour power reserve, sapphire crystal front and back, silver dial. Functions: hours, minutes, power reserve, one-minute tourbillon with fusée-and-chain transmission, chronograph with rattrapante function. Chrono push-button at 2 o’clock, reset button at 4 o’clock, rattrapante push-button at 10 o’clock, crown for winding and setting time.

A. Lange & Sohne - Tourbograph

A. Lange & Sohne - Tourbograph (mouvement)

The manually wound L903.0 calibre is one of the most extraordinary masterpieces ever crafted by the Lange manufactory. It is composed of over 1000 individual components, has 41 synthetic ruby jewels, and is precision-adjusted in five positions. Six gold chatons are secured with screws to the untreated German silver plates and bridges. The sapphire-crystal back showcases the tourbillon, the chronograph/rattrapante mechanism, and - below it - the fusée-and-chain transmission.

Technical data:
Diameter: 30mm
Height: 8.9mm
Power reserve: 36hours
Frequency: 41
Diamond endstones: 2
Number of parts: 465(chain = 1 part)
Number of chain parts: 633

A. Lange & Sohne - Tourbograph (tourbillon)

The tourbillon carriage comprising 84 parts and weighing less than half a gram.
Fusée and chain optimizes the rate accuracy of the Tourbograph.

A. Lange & Sohne - Tourbograph (fusee)

Omega - De Ville Rattrapante

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