Thin under string radius gauge set

Understring Radius Gauge for guitar and bass setup - Set of 9

17 reviews Write a Review
  • Understring radius gauge
  • Set of 9
  • 7.25”, 9.5”, 10”, 12”, 14”, 15”, 16”, 17” and 20” radii
  • Laser cut from stainless steel
  • Etched with radius on handle
  • .051” (1.3mm) thick
  • 2 5/8” (66.6mm) wide

These come in the most popular fingerboard radius and make it easy to measure the radius from either above or below the strings.  Use these to accurately setup your guitar bridge saddles to match the fingerboard radius.

17 Reviews Hide Reviews Show Reviews

  • 5
    Radius Guages: Get Them Now

    Posted by Unknown on Jul 7, 2017

    Very nice set of guages at a killer price. A must for any serious guitar guy whose maintaining a gaggle of guitars.

  • 5
    Buy this!

    Posted by Luke on May 31, 2017

    Yeah! Does the job and has a good price! I can only recommend these!

  • 5
    Another great tool

    Posted by Erik on Apr 15, 2017

    I can't speak from experience in terms of having used other radius gauges because I haven't. That aside, I tested them against guitars with different radii and they're accurate to a T. I've also used them to confirm my first ever re-radius of a fingerboard along with the radius block. Awesome gauges.

  • 5
    Well made

    Posted by Richard on Jan 10, 2017

    Great tools for guitar setup

  • 5
    Accurate and made well

    Posted by Unknown on Aug 29, 2016

    These are a very good set of gauges. Nice thickness to them and accurate to a T.

  • 5
    Good stuff

    Posted by Joe on Dec 15, 2015

    A nice set of gauges. They're thicker than they might appear (they're not flimsy) and the radius is clearly marked. Well worth the price, a must-have for any guitarist's toolbox.

  • 5
    Great Product

    Posted by Unknown on Jul 22, 2015

    Better than the plastic ones I was previously using.

  • 5
    Accurate and intuitive

    Posted by Nick on Feb 21, 2015

    The understring radius gauges are so far the best tool I've found for setting a guitar's action, in combination with something to measure the top and bottom strings to start you off. It takes a lot of tweaking, but if you set the strings so that each one is buzzing on the radius gauge, I don't think you'll find a more accurate setup. I'm talking very minute turns of your saddle height screws to get everything right. Although it takes time, this process is easier than measuring the inside strings against the frets, as well as being more accurate.