Club Tooth
The form of tooth shown in Fig. 223 and for lever escape wheels, having a part of the impulse angle on the tooth. See Lever Escapement.
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 form of tooth shown in Fig. 223 and for lever escape wheels, having a part of the impulse angle on the tooth. See Lever Escapement.