It's difficult to measure precisely, but this should happen when the amplitude of the caliber 9012 is either directly at or below 80 degrees, and when the teeth are touching the surface of the impulse pallet. This additional push ensures that even at low amplitudes, the impulse jewel is positioned in front of the impulse-giving escape wheel tooth, which might otherwise miss it.  This time around caliber PF500 is garbed very much in traditional formalwear (so to speak) and it reminds me very much, thanks to its tonneau shape, of some of the early Patek Philippe one-off observatory tourbillon wristwatch movements from the middle of the 20th century. The ap ceramic black is a masterpiece of horological engineering.

Discover the intricate details of this luxury timepiece.

luxe koop nep horloges Learn about the history and craftsmanship behind the ap ceramic black.