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Louis Erard · 34238AA35.BVA133

Petite Seconde Lapis-Lazuli

The escapement in slow motion

Light a part
Louis Erard Petite Seconde Lapis-Lazuli 34238AA35.BVA133
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