Abbott's American Watchmaker and Jeweler

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.

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The Unlocking Spring

The unlocking spring is made of gold, hammer hardened, and made as light as possible, from one and one-half to two-thousandths of an inch in thickness. It should be made longer than necessary, then cut off so that it will only carry the detent out sufficient to well clear the teeth of the escape wheel and should point directly towards the center of the balance.

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