Mainspring Punch
A punch used by watchmakers for perforating mainsprings. It is inserted in a vise when used. These punches are also made in the form of tongs or plyers.
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 punch used by watchmakers for perforating mainsprings. It is inserted in a vise when used. These punches are also made in the form of tongs or plyers.