in really important watches because if memory serves me well all the minute repeater of Patek have a micro rotor (maybe even the ones with minute repeater and tourbillon). Regarding this Dubuis I think that this is just amazing and the micro rotor fits ve...
Lehmann has a (mainly) sapphire crystal rotor, and Carl F Bucherer has a non-central pivot peripheral rotor, which I believe they have patented. Micro rotors aren’t renowned for their efficiency, which may explain the relative lack of proliferaton, but I’...