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Patek Philippe: Strictly speaking, the CHR 27-525 PS draws heavy inspiration from vintage Victorin Piguet rattrapantes

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
1M
By: skyeriding
1

Independents: "In theory", a competent watchmaker could do it without particularly specialised tools, once understanding what each adjustment does

But for a timepiece within this price range, I'd imagine owners would send it back to Krayon for peace of mind... Regards, skyeriding
2M
By: skyeriding
1

Independents: Longitude adjustment on the Krayon Anywhere is easier to adjust, latitude may be a little trickier...

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
2M
By: skyeriding
1

Montblanc: It's a Minerva 19-09CH - crown pusher and 6-pillared column wheel

Couldn't find many photos of the movement online, but here's one from Robb Report for reference: Regards, skyeriding
3M
By: skyeriding
1

A. Lange & Söhne: Thank you for specifically mentioning those points

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
3M
By: skyeriding
2

A. Lange & Söhne: Without knowing the full history, this infers a likely a design optimisation to the mainspring of the initial release

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
3M
By: skyeriding
5

Patek Philippe: I'd like to think of the red hand as giving a direct reading up to 12s, using the hour indices

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
4M
By: skyeriding
2