Watch Balance Wheel Screw Regulating Wrench for 3135 2130 3035 3155 3055 1570 Movements

Watch Balance Wheel Screw Regulating Wrench for 3135 2130 3035 3155 3055 1570 2135 2030 4030 4130 2235 Movements

This generic Micro Stella wrench has a graduated scale, each line representing 1 second per day for screws with "low heads" , each line representing 2 seconds per day with screws with "high heads".

Iis used to regulate the balance by adjusting the screws.

Package included: 1 piece