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Introducing Crimson's revolutionary new Understring fretboard radius gauge design.  No more fumbling around trying to find the right gauge, all the gauges you need on 2 tools.  The most common questions we have are to do with shaping your guitar neck or fretboard.  Wtih our new Understring fretboard radius gauges you no longer need to 'eyeball' the curve of your fretboard, and you can check the radius without taking the string off.  Also use the top curve of the gauge for accurate bridge saddle adjustments.

  • UK made
  • Precision engineered stainless steel, 1.5mm thick
  • Come with 7.25", 9.5", 10", 12", 14", 15", 16" and 20" radii
  • Work with fretboards up to 3.25" (83mm) wide
  • With spokes only 3mm wide, our gauges fit neatly under most strings
  • Buy the set of 2 to cover all sizes

Check out our YouTube channel for more videos on how to get the most out of your Crimson Guitars precision hand tools as well as a myriad of guitar building tutorials and demo videos.

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