Rating Nut
A nut placed upon the pendulum rod to complete the timing or compensation.
RAYMOND, B. W. A Chicago capitalist and the first president of the Elgin
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 nut placed upon the pendulum rod to complete the timing or compensation.
RAYMOND, B. W. A Chicago capitalist and the first president of the Elgin