Guitar Under String Radius Gauges — Nine Pieces

Compare guitar string and fretboard curves with nine marked radius gauges. Different stainless steel profiles give you references for the setup you are checking.

✅ Check below the strings - The shaped gauges provide access beneath the strings for comparing their curve.

✅ Compare several radii - Nine profiles let you find the working reference for the radius being inspected.

✅ Identify the selected curve - Marked sizes help you choose the gauge needed for the current comparison.

Bring a curve reference to guitar setup checks

Guitar setup can involve comparing the string curve with the intended radius. A shaped gauge provides a physical reference for that check without making an adjustment to the instrument itself.

Select the marked profile around the area you are inspecting and use an appropriate setup method. The nine-piece selection keeps several radii available as you compare different instruments or positions.

Technical details

• Material: stainless steel
• Radii: 7.25, 9.5, 10, 12, 14, 15, 16, 17 and 20 inches
• Includes: nine gauges
• For comparison, not automatic adjustment

Add marked radius references to your guitar setup kit.