What is a guitar radius meter?

	A guitar radius gauge is also known as a fretboard or fretboard radius gauge. They are used in the manufacture of fretboards to ensure that the fretboard radius matches the string radius setting. This is to ensure that the instrument is tuned to produce the correct sound and that there is an optimum level of comfort for the performer.
Fretboard radius designs
	The neck gauge should be used according to the under string radius gauge. They are available in imperial or metric units. Guitar neck size varies by manufacturer. Common guitar fingerboard radii range from 184.1 mm (7.25 inches) to 406 mm (16.00 inches).
Radius meter under string guitar
	The under string radius gauge is used to adjust the radius of the string to match the fretboard on the guitar. String spacing depends on the make and model of the guitar you are playing.
Homemade Fretboard Radius Meters
	You can print the downloadable neck template to cut it. You can also draw your own cutout template by following the instructions in How to Make Your Own Radiometer.
What are the benefits of a guitar radius meter?
	The advantage of a guitar radius gauge is that it allows you to quickly visually inspect the neck. This will keep you from accidentally changing the shape, a mistake that is easy to make but hard to fix. Guitar radius meters can be made from a variety of materials, so they are available for all price ranges.
What are the disadvantages of a guitar radius meter?
	The disadvantage of a guitar radius meter is that it is largely limited to the use of the fretboard. Homemade guitar radius meters may be less durable or accurate than store-bought alternatives.