At first, when you saw the tourbillon structure of Duomètre à Sphérotourbillon, it is inevitable to think of Jaeger-LeCoultre Gyrotourbillon 1 spherical tourbillon released in 2004, and a spherical aluminum alloy frame with a solid tourbillon outer 60 One second rotation, one second frame at an angle of 90 ° to the outer ring, one second rotation in 24 seconds; ”08 Tourbillon No. 2 was mounted on the square Reverso series, and a cylindrical spring was used to improve isochronism The rotation period of the frame was also accelerated to 18.75 seconds, and it was arguably the fastest tourbillon in the world at the time of publication.
The 9 o’clock tourbillon is tilted at 20 ° with two axes, the outer titanium frame rotates for 30 seconds, the inner escapement rotates for 15 seconds, and a cylindrical hairspring is used to improve the stability of the balance wheel.
Feature one: cylindrical hairspring helps to improve travel time accuracy
This Duomètre à Sphérotourbillon uses the technology and concept of making ultra-complex tourbillon in the past. Its dual-axis tourbillon at 9 o’clock is inclined at 20 ° on both axes, and the three-dimensional titanium metal frame on the outer ring rotates once every 30 seconds. The internal escapement system runs at a speed of one revolution every 15 seconds at the same time, and the speed is much faster than the general tourbillon, and the visual dynamics are more flexible. In addition, a cylindrical hairspring is used. The end curves of the head and tail of the hairspring can cause the hairspring to vibrate in a concentric circle. Due to the large volume of the cylindrical hairspring, it was mostly used for boat clocks or pocket watches, but its isochronism is better Generally flat hairsprings and even Breguet hairsprings were transplanted to watches to test the production technology.
The eccentric dial at 3 o’clock can read the local hour, minute and date information, and the small dial at 12 o’clock shows the second time, which is relatively practical.
Feature two: more accurate than the general tourbillon
The highlights of the Duomètre series include the dual power system. The Cal. 382 is equipped with two barrels. One is designed to provide escapement power and the other is to provide all indication functions. The box is wound. Thanks to the dual-wing system, Duomètre à Sphérotourbillon has the function of resetting the second hand at 6 o’clock, and it can be reset to zero by pressing the pusher at 2 o’clock, but the escapement system will continue to operate, so the tourbillon still It will continue to rotate, to avoid the slight error that may occur before the balance wheel is stopped and restarted before returning to the original normal vibration frequency.
Two barrels on the left and right of Cal. 382. The central ratchet is engraved with gold lettering to indicate the power. The plywood is decorated with the classic sunburst sanding of the Jaeger-LeCoultre movement.
Feature 3: There are two places to watch
Duomètre à Sphérotourbillon dual-axis tourbillon dual-power supply Although it is no longer as clear as the first series in the general travel time and complex timing power is so clear barriers, but the dial design also roughly continues the relative concept of the two wings, the dial at 3 o’clock includes Hours, minutes, and dates are displayed. Compared to the dual-axis flying tourbillon at 9 o’clock, about 12 o’clock is second place time, 6 o’clock is small seconds, and the mobile display is moved to the 1, 4 o’clock position.
Duomètre à Sphérotourbillon
Platinum material / 382 manual winding movement / hour, minute, small seconds, date display / dual axis tourbillon device / dual time display / dual power reserve display / sapphire crystal, transparent bottom cover / water resistance 20 meters / diameter 42mm ／ Limited to 75 pieces