Last 2006 the manufacture introduced a new escapement that functioned
 at a less frenetic 21,600 vph, but even at that time tests had shown 
that the AP escapement  was able to running perfectly at 43,200 vph or 6
 hertz-even without the lubrication in the pallet stones, which would 
quickly dissipate at that speed anyway. The omission of lubricant solves
 a problem that has plagued watchmakers provided that mechanical 
timepieces have been with us: gumming or hardening on the oil. 
This fresh escapement is dependant an invention by Parisian royal 
clockmaker Robert Robin (1742-1799). He launched a new system in 1791 
that combined the virtues of the two well-known escapements throughout, 
so-called free-sprung escapement and one including energy transfer via 
pallet fork and guard pin in the precursor towards modern Swiss lever 
escapement as invented by Thosmas Mudge in 1759.
Audemars Piguet has succeeded in securing the benefits of both 
systems in its new high-frequency escapement, solving the oil problem 
and introducing a brand new and important aspect of the sport: rate 
precision.”see more imitation rolex and replica Omega
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