Understring Radius Gauges

Understring Radius Gauges, Standard width, set of 4
Standard width, set of 4 Item # 2309 In stock, ready to ship!
$17.37
Understring Radius Gauges, Standard width, set of 9
Standard width, set of 9 Item # 0353 In stock, ready to ship!
$39.17
Understring Radius Gauges, Extra-wide, set of 9
Extra-wide, set of 9 Item # 0359 In stock, ready to ship!
$54.37
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Understring Radius Gauges

Fast, accurate bridge saddle adjustment.
Each of these unique gauges has an accurately radiused arc on both the top and bottom surfaces, and is shaped to fit easily under the strings.

Use the bottom curvature to determine your fretboard radius, and the matching top curvature becomes a reference for setting string saddle heights for best playability.

Low profile fits tight spots. The slim shape of our understring gauges allow you to read the fretboard radius even with the strings on! This is also handy for matching pickup polepiece heights to the arc of the strings. And setting bridge saddles is easier than ever.

Standard width covers 6-string guitars and most 4-string basses—the gauges span string spreads up to 2-5/8" (66.68mm).

Extra-wide covers string spreads up to 3-3/4" (95.25mm)—enough for
4-string, 5-string, and many 6-string basses. They'll also handle
7-string and 8-string guitars.

Available in three sets to fit your needs:
Standard width, set of 4 includes these common radii:
7-1/4", 9-1/2", 12", and 16"

Standard width, set of 9 includes these radii:
7-1/4", 9-1/2", 10", 12", 14", 15", 16", 17" and 20"

Extra-wide, set of 9 includes these radii:
7-1/4", 9-1/2", 10", 12", 14", 15", 16", 17" and 20"

Stainless steel.

California Proposition 65 Warning
Cancer and Reproductive Harm