Measurements in millimeters: 184'2 mm, 241'3 mm, 254 mm, 304'8 mm, 355'8 mm, 381 mm, 408'4 mm, 457,2 mm, 508 mm.
Technical data: SUMMIT® Fret Radius Gauge Set is an important tool for accurate anchor and proper positioning of all frets. With the Fret Radius Gauges we can see the curvature of the frets, as we go placing them on the fingerboard.