Used as a base for adjusting the watch hairspring or balance. Has 12 holes and center slot. Measures 1-1/2" x 1/4" (40mm x 6mm) in nickel plated brass. Swiss made.
- 12 holes from 0.50 to 2.70mm and a center slot
- Holds hairsprings and balance
- Nickel plated brass
- Swiss made