Description: Guitar Fretboard Neck Notched Straight Edge Luthier Tool Measurement Fretboard Frets A notched straight edge ruler to check guitar neck's straghitness Invaluable tool for luthiers or amateur that love a perfect fretboard-fretwork Perfect for Fender guitar and Gibson Guitar, durable in use Material: Zinc Alloy Size Chart: Approx. 420 x 37 x 3.5mm/16.53 x 1.45 x 0.13inch Package Includes: 1 x Guitar Straight Edge Tool