What Is a Watch Movement Accuracy Regulation: How to Adjust at Home

Precision Tuning

Regulating your watch movement at home can improve accuracy. Here is how to do it safely.

What You Need

• Fine screwdriver 1.0mm
• Timegrapher app or reference clock
• Case back opener
• Soft cloth

Regulation Steps

1. Open the case back
2. Locate the regulator arm on the balance cock
3. Move the arm slightly toward + or -
4. Close the case back
5. Test accuracy for 24 hours
6. Repeat if needed

Tips

• Make tiny adjustments fractions of a millimeter
• Test for 24 hours minimum
• Keep away from magnets during testing