Two Pin Escapement
A variety of the lever escapement having one small gold pin in the lever and two in the table, and the unlocking and impulse actions are divided between them.
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.
A variety of the lever escapement having one small gold pin in the lever and two in the table, and the unlocking and impulse actions are divided between them.