Guitar neck relief & string action gauge

Digital Neck Relief Gauge and Nut Slotting Gauge Good playability is measurable. It doesn't have to be guesswork! I designed this Digital precision gauge so you can build, setup and repair guitars with repeatable accuracy. Digital Nut Slotting Gauge measures the heights of the strings over the first fret, so you can cut more accurate nut slots. Neck Relief Gauge accurately measures the amount of variation from a dead flat position, to take the guesswork out of adding or subtracting neck relief as you adjust the truss rod. Includes custom precision fit case.