Guitar String Height Rulers Action Gauges Repairing Tool For Ukuleles Banjos Mandolin

Suitable for electric guitar, acoustics guitar, mandolin, banjos. The white graduations make reading clear and easy. The beautiful black plating avoids reflection, which you not want to encounters. 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. Rejects any jagged edges, you will get a very flat and smooth leveling edges.