Features: 1.The guitar pitch string height ruler can measure the string height and pitch, which is suitable for electric guitars and acoustic guitars. 2.The notched neck string measuring ruler is designed to check the straightness of the guitar neck of the fingerboard and strings. 3.The guitar neck ruler is made of stainless steel, which has the characteristics of high strength, wear resistance and rust resistance. 4.These two guitar measuring tools have clear and accurate scales, which are easy to read and not easy to fade. 5.The thickness and weight are moderate, and the surface and edges are glossy to avoid scratches on the guitar. specification:Item Type: Guitar String Action Gauge Material: Stainless steel + plastic Guitar Neck Ruler Size: Approx. 420 x 37 x 2.5mm / 16.5 x 1.5 x 0.1in String Pitch Ruler Size: Approx. 85 x 54mm / 3.3 x 2.1in PackageList:1 x Guitar Neck Ruler 1 x String Pitch Ruler