Girard-Perregaux – Tri-Axial Tourbillon
A demonstration of watchmaking mastery, the Tri-Axial Tourbillon introduced by Girard-Perregaux at BaselWorld 2014 advances the chronometric performance and showcases a captivating spectacle.
The Tri-Axial Tourbillon features a regulator on three separate axes. The tourbillon cage, performing one rotation in one moment, is integrated inside a design situated on a second axis which plays out a complete rotation in 30 seconds. Finally, both are embedded into a third framework placed on a third axis which performs one rotation in a short time. The total diameter of the outfit comes to 13.78 mm.
The cage and the drive frameworks, weighing simply 1.24 grams, are made of steel with the help pillars in titanium or in rose gold. The balance, integrating 16 rose gold adjustment miniature screws beats at a recurrence of 3 Hz, or 21,600 vibrations each hour. To give the necessary inside volume to lodging the tourbillon’s triple cage, it was necessary to integrate a domed focal point that leans against the sapphire crystal.
Hours and minutes are indicated by skeleton-shaped dauphine hands crafted from rose gold and displayed in the silver dial placed at half past one. The force save indicator starts at the focal point of the watch to end at 6 o’clock. Planned graphically to shape an array of circles and bends, the dial presents concentric, regular stripes in the unfilled areas.
Not simply a technical masterpiece, the tri-axial tourbillon system is also finely decorated and wrapped up by hand with mirror-cleaned surfaces and wonderful chamfering even on inward angles. The gear train is circular-grained and the sides are satin-brushed.
The 48 mm rose gold case is characterized by a large angled bezel in accordance with the plan codes of Girard-Perregaux’s Haute Horlogerie assortment. A toric-shaped sapphire crystal is also integrated into the side of the case at 9 o’clock to show the rotation of the tourbillon from another angle.
The sapphire crystal case-back reveals the whole development and, in particular, the satiny circular extension engraved with the words “Tri-Axial” that underpins the differential of the tourbillon system. A plaque in the arrow shape of the Tourbillon with Three Bridges’ notable scaffolds bears the individual number of each piece. This shape is also found on the gold scaffolds also noticeable on the back of the movement.
The new GP09300 mechanical caliber with manual winding comprises 317 components and has a base force hold of 52 hours.
Just 10 bits of the Girard-Perregaux Tri-Axial Tourbillon (ref. 99815-52-251-BA6A) will be created.