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Lexikon
a c e g i k m o q s u w y
b d f h j l n p r t v x
                                                   
s

Spring:
The beat adjuster has a coil spring.

Supplementary arc:
Oscillation phase of the pendulum. Outbound supplementary arc: pendulum travels from the end of the drop to the turning point. Inbound supplementary arc: pendulum travels from turning point to locking.

Suspension spring:
Spring steel strip between brass jaws. The suspension spring holds the pendulum.

 

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