Grendly Gauge for Guitar Neck Curvature, Guitar Fretboard Gauge, Flat Ruler, Calibration Instrument Reset

There is no need to rely on the eye to adjust the bend and deformation of the neck, quickly adjust the flatness of the neck to the problems of breakage and noise, etc. Product Name: Neck Curve Gauge Product Function This high measuring device for measuring the neck plane can measure the deformation and bend of the neck, a very reliable and clear measuring standard for assessing the deformation and bending of the neck. Instructions for use: Advantages of digital display: data can be viewed more conveniently, but also clearer and easier 1. First, set to zero on the glass or other pure flat , place the tool on the glass,