W6171 Co-axial Micro-Star Regulating Key Wrench for 8500 3303 3313 2500 Watch Balance

W6171 Co-axial Micro-Star Regulating Key Wrench for 8500 3303/3313 2500 Watch Balance

This Micro-Star balance regulating wrench is made for the co-axial caliber OMG movement. This tool is for setting the balance wheel screws while the balance is still in the watch case.

The main features of this co-axial balance wheel are that it is fitted with micro-star shaped screws that are adjustable. One complete turn of both regulating screws represents a rate adjustment of 52 seconds per day and 82 seconds per day. The tool has a scale on it to make it easier to read the correction.

1 piece per order. Please choose the model that you need.

Package included: 1 piece