6-Piece Gauge Kit for an excellent setup process with innovative, high-quality gauges, includes web gauge that features the three most common web relief measurements (.006”, .008”, .010”) for electric, acoustic, and bass guitars, plus innovative capo, string action gauge with precise, easy-to-read measurements (inches, metric, and 64ths): 7.25”, 9.5”, 10”, 12”, 14”, 15” , 16”, 20”. Nut Height Gauge with the three most common nut height measurements (.016”, .018”, .020”) plus three additional sizes (.012”, .014”, .022”), plus a 24-page instruction booklet and a carrying case.