The fusee-and-chain transmission is a way of providing a constant even force to the escapement as the mainspring unwinds itself throughout its range of power reserve. The fusee (from the French fusée , wire wound around a spindle) is a cone-shaped pulley ...
I have handled the Breguet and RG from this bunch. These are large for my wrist. I like the Breguet for the overall design including the domed crystal.
Btw LEROY OSMIOR CHRONOMÈTRE with Breguet numerals is my grail/exit watch And for anyone who wants to buy it for me, I’ll will it to the charity of your choice.
But, I would have to pick a Berthoud, their execution is simply indomitable to my sensibilities! I also happen to totally be in love with the octagonal case design that they offer . Thanks for this splendid assembly of pictures and information Emmanuel. C...
and I understand your taste for the octagonal case of the FB1. Because I prefer solid dials, though, my preference goes to the FB2. And among the fusee-and-chain examples above, my favorite is the Leroy: incredible dial and all the magic on the back, with...