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F.P. Journe

I suspect some facts are missing here...

 

I believe, and I could be wrong, but I believe that the testing Concours International de Chronométrie did to measure accuracy was done having the watches in a stationary positions.  This makes sense, as if the watches were worn by people to test accuracy, the different patterns of the wearers would introduce a random element, impacting the results.


Hence, because the watches tested were in a stationary position, a tourbillion can be effective.  On the wrist of a moving person, however, I would need someone to be able to rationalize how a tourbillion increases accuracy.  

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