The dedication to accuracy explains why the QL has two second hands ( one foudroyante, or diablotine should be more correct, and the other, the classic central second ) which:
- Both hack.
- Can be both reset to zero.
Now, what I saw at the Manufacture ( because I asked to meet a wathcmaker in charge of the Duometre line and JLC played the game ), was the measure of the amplitude of the QL.
The amplitude line was quite flat and " constant " till the last 10 hours of power reserve. Then it went down in a dramatic way.
So, this is the " flatness " of the amplitude line which is the illustration of the benefit of this original construction.
At the service of accuracy.
Best,
Nicolas