2 Diapasones de Guitarra Liso de Acero Inoxidable Diapasón Medidor de Radio Herramienta Luthier
It's faster to use than any rulers, and stays parallel to the fingerboard-much easier than trying to hold a ruler perpendicular to a rounded fret. (7.25", 9.5", 10", 12", 14", 15", 16" and 20"). Radius gauges x2.