Ruby PinThe impulse pin in a lever escapement, made of a ruby.
The angle of the locking faces of pallets in the lever escapement.
This balance wheel and hair spring stand today, but the lever escapement has taken the place of the verge.
We will now take up the club-tooth form of the lever escapement.
The correct delineation of the lever escapement is a very important matter.
A name also applied to one kind of lever escapement with an unusually wide impulse pin.
We have now come to the most intricate and important problems which relate to the lever escapement.
RollerThe circular plate in a lever escapement, into which the ruby pin is set.
A form of lever escapement designed to obviate the evils of overbanking.
RunIn the lever escapement, the extent of the movement of the lever toward the banking pins after the "drop" on to the locking.