aaronm
2923
You can see the sapphire disks here
It's a challenge to shoot, but not as hard as FrX makes it out to be 
A
It works...
By: DonCorson : June 9th, 2009-11:45
because the numbers are not actually printed on the barrels, but on toothed sapphire disks that are mounted above the barrels. You can just make them out on the pictures. That way they can be adjusted through a slip clutch just like any other watch. Andre...
3 more questions
By: au7778 : June 10th, 2009-01:48
1. Does the 2 toothed sapphire discs synchronized to the rotations of two main spring barrels? 2. The two mainspring barrels are said to be not firmly tied into the sequence of the movement. How are they regulated by one escapement? 3. From what point of ...