Ollie Baker Chuck #9-11 attaches to the barrel arbor of the Ollie Baker style mainspring winder. Ollie Baker let-down chucks are used to wind and unwind the clock mainsprings.
Ollie Baker Chuck #9-11 attaches to the barrel arbor of the Ollie Baker style mainspring winder. Ollie Baker let-down chucks are used to wind and unwind the clock mainsprings.