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Louis Erard · 66237AA52.BVA34

Excellence Guilloché Main

The escapement in slow motion

Light a part
Louis Erard Excellence Guilloché Main 66237AA52.BVA34
28,800 vph, 4 Hz, 8 beats a second
Speed

One tick

125 ms, slowed to 12.5 s7.1 ms of it in the lift
Step through a beat

Escapement, in the lexicon