String Action Rulers Gauges Fret Leveling Guide Guitar String Measuring Tool Height Gauges Guitar Set Up Repair Tool

Rejects any jagged edges, you will get a very flat and smooth leveling edges. The white graduations make reading clear and easy. Suitable for electric guitar, acoustics guitar, mandolin, banjos. Suitable for fret crowns height，string height, for saddles slot depth. Measure distance between the pickup rod pieces and the strings.Measure the nut height. The beautiful black plating avoids reflection, which you not want to encounters.