Guitar Under String Radius Gauges — Nine Pieces

Compare string and fretboard curves with nine stainless steel radius gauges.

Practical benefits

• ✅ Check the curve below the strings – The shaped gauges reach under the strings for setup comparisons.
• ✅ Choose from nine radii – Different gauge curves help identify the required radius.
• ✅ Keep the sizes easy to identify – The marked gauges let you select the working curve.

Stainless steel. Listed radii: 7.25, 9.5, 10, 12, 14, 15, 16, 17 and 20 inches.

Package: nine gauges. These tools compare radius; they do not adjust the instrument by themselves.

Explore more guitar tools and accessories for your projects.