Designed to check guitar neck straightness of the fretboard and not just The frets. This is the only true way to check for straightness before leveling your frets. Essential for proper truss rod adjustment. 1/8″x1.5″x18.5″ Machined Edge 6061 Aluminum. This is very rigid and will last for years without bending. One side is for 25.5″ (Fender) scale guitars, and the other side is for 24.75″ (Gibson) scale guitars. We wanted to make this tool affordable not only for guitar techs but players as well, so there is no fancy engraving, etc.
CNC precision machined for a flatness of +/- .001″ Good to use with 21, 22 or 24 fret necks..doesn’t matter. Use with strings on or off. Notched to the 22nd fret with clearance for more frets and Clearance for the nut on the other end. Covers the entire length for the neck (2″ longer than Stew-Macs version).
You can also place on top of the frets (off the cut notches) to use as a Standard Straightedge to check fret wear and level.
If you are not sure scale length of your guitar… measure from the edge of the nut (headstock) to the center of the 12th fret. It should be about 12 3/4″ or 12.3/8″ +/- 1/16″