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Eccentric bush:
Bushing with an off-centre hole. Mounted into the pallet arbor bridge. By turning the bush, the engagement distance of pallets and escapement wheel changes and the drop can be equalized.
Engagement:
Engagement is the gearing of wheel and pinion. The transmission of force is better the more teeth are in the engagement.
Escapement:
Unit consisting of escapement wheel and pallet arbor. The escapement transmits the power to the pendulum that is necessary to maintain its amplitude. It also ensures that the gear train runs down gradually with the escapement wheel turning once a minute.
Escapement wheel:
Part of the escapement. Wheel that engages the pallets.
In the Precision pendulum clock it turns once every 60 seconds and is mounted with a bushing on the escapement wheel arbor to which the second hand is attached.
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