Guitar Radius Gauge,9 PCS Guitar Under String Radius Gauge,Guitar Understring Radius Gauge Guitar Understring Radius auge for Acoustic Musical Instrument Luthier Tools Musical Instrument Accessories

A must for guitar set up

Very well made and accurate.

Very good to have this tool for setting up the radios of your strings

You really need to be carful when using these. They have very rough and sharp edges. After my first use I sanded them down with some wet and dry with a few grits to take away any sharp edges. Other than that, they do the job. Use in a well lit room though, because you may not see any gaps under the tool when you're checking the radius of the fingerboard or bridge

Useful product for setting up your guitar at home, provides a visual representation of action when adjusting the action. Good value product, might not use them all, but price decent enough regardless

Good quality but package incomplete - have asked Amazon to address.

I only needed one. I whish I could just buy the one I need. I now have one useful tool, and eight not very useful ones. I might need to obtain eight new guitars with different neck shapes just to complete the set.