The Music Nomad Tri-Beam 3-in-1 Fret Levelling Tool is a practical measuring tool for guitar maintenance helping you check fretboard flatness neck relief and fret level with one compact design. Its patented triangular profile combines two custom notched straightedges for most electric and acoustic guitars plus a 17.6" notch-free straightedge for checking fret height directly across the frets. This makes it useful whether youre adjusting a truss rod or preparing for fretwork.Precision-ground from 6063-T5 aluminium each edge is manufactured to a tight tolerance for dependable accuracy while the rigid triangular construction helps prevent flex during use. The custom notch layouts cover a wide range of common scale lengths including many Gibson® Fender® and PRS®-style guitars with additional support for selected 24" and 22.75" scales. A durable blue anodised finish resists wear and the integrated hang hole keeps the tool easy to store between setup sessions.