A guitar radius gauge is also known as a fretboard or fingerboard radius gauge. They are used during fret board production to make sure the fretboard radius matches the string radius setup. This is so the instrument is set up to produce the correct sound and so there is an optimum the level of comfort for the player.
Fretboard radius gauge designs
The fretboard gauges should be used in accordance with the under string radius gauge. They are available in either imperial or metric measurements. The size of a guitar fretboard varies according to manufacturer. The radii of common guitar fretboards vary from 184.1mm (7.25 inches) – 406 mm (16.00 inches).
Under string guitar radius gauge
An under string radius gauge is used to setup the strings radius to match the fretboard on your guitar. The string spacing depends on the make and model of the guitar you are working on.
Homemade fretboard radius gauges
It is possible to print off a downloadable fretboard template to cut out. It is also possible to draw your own template to cut out, by following the instructions listed under ‘How to make your own radius gauge’.
What are the advantages of a guitar radius gauge?
The advantage of a guitar radius gauge is that it allows a quick visual check of the fretboard to be made. It keeps you from accidentally altering the shape, a mistake that’s easy to make and hard to fix. Guitar radius gauges can be made from a number of materials, so gauges are available for all price ranges.
What are the disadvantages of a guitar radius gauge?
The disadvantage of a guitar radius gauge is that it is largely restricted to fingerboard applications. Homemade guitar radius gauges may be less durable or precise than shop bought alternatives.