Conversion
A term in watchmaking signifying that a change of escapement is made, as a movement originally having a duplex escapement is changed to a 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.
A term in watchmaking signifying that a change of escapement is made, as a movement originally having a duplex escapement is changed to a lever escapement.