For reference, here's a vintage Patek rattrapante, with a Victorin Piguet movement from a century ago (which is 12 ligne, or ~27mm in diameter): Next to the modern CHR 27-525 PS as found in the 5950 (which is also 27.3 mm in size): There are many similarities in the architecture, with notable upgrad
To take a step back, the Krayon Anywhere is mechanically "programmed" for one specific location on the globe (the longitude is the X-axis, the latitude is the Y-axis). To change the location programmed in the Krayon Anywhere, a watchmaker has to open the caseback and make two adjustments to change t
I forgot about the balance wheel stop feature. In that case, it is entirely possible that the gear ratio of the barrel and second wheel between the old and new movements are identical, since the brake lever will stop the balance wheel before the barrel depletes. I do not have further info of the ori
The stopwork system illustrated here is based on an orbital maltese cross. The outermost orbital cam with one less tooth revolves/pinwheels around the stationary central cam. They have a difference of one tooth, such that after a number of turns, the long tooth of the central cam lands into the shal
For example, I can read off "8.3 seconds" directly from the scale using the red hand. But if I measure 15.3s, the red hand points to 3.3s and I have to mentally add 12s to it. Or, I read off the regular Rh plated hand of 15s and add the 0.3s from the red hand (which I suppose is the intended way for