Escaping Arc
The angle included in the oscillation of a pendulum or lever from the time one tooth of the escape wheel passes from one pallet to the next.
How to true a balance, repair a chipped dial, temper a spring or test a stone — the working bench-book of the American watch trade, arranged A to Z.
The angle included in the oscillation of a pendulum or lever from the time one tooth of the escape wheel passes from one pallet to the next.