Guitar Setup Tools

Department

Radius gauges

Choose a gauge for the string or fretboard surface and the radius you need to measure.

3 items

StewMac

StewMac Standard Understring Radius Gauges, Set of 4

Radii: 7.25, 9.5, 12 and 16 inchesMaximum span: 2⅝ inches

Four standard-width gauges in 7.25, 9.5, 12 and 16 inches.

$21.09Nov 8, 26, 09:30 AM · New York
Price info

This is a monthly price snapshot supplied by Rainforest, not a live quote. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

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StewMac

StewMac Standard Understring Radius Gauges, Set of 9

Radii: 7.25, 9.5, 10, 12, 14, 15, 16, 17 and 20 inchesMaximum span: 2⅝ inches

Nine standard-width gauges covering radii from 7.25 to 20 inches at the listed values.

$33.99Nov 8, 26, 09:31 AM · New York
Price info

This is a monthly price snapshot supplied by Rainforest, not a live quote. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

Add to cart Opens Amazon. Order and pay there.

MusicNomad

MusicNomad MN603 Fretboard and String Radius Gauges

Radii: 7.25, 9.5, 10, 12, 14, 15, 16 and 20 inchesCount: 2 gauges

Two dark multi-edge radius gauges covering eight listed radii from 7.25 to 20 inches.

$17.99Nov 8, 26, 09:32 AM · New York
Price info

This is a monthly price snapshot supplied by Rainforest, not a live quote. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

Add to cart Opens Amazon. Order and pay there.

Choosing radius gauges

Separate the board and the string array

A gauge for the fretboard contacts the board or the surface specified in its instructions. An understring gauge checks the arc beneath the strings. Choose the contact method before comparing sizes.

Check radii and working width

Match the individual radius markings to your instrument and confirm the gauge spans the strings or board you intend to check. Two sets with the same piece count can cover different values.

Compare these selections

Department questions

Can I read the bridge with a fretboard gauge?

Use the tool designed for the prescribed surface and access. The required radius can differ along a compound neck.

Does a set with nine pieces cover every radius?

Read its exact markings. The number of pieces does not identify the values.

Is scale length the same as radius?

Scale length and crosswise curvature describe different dimensions. Choose by the dimension the job requires.

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