Notched Radius gauges binding with the provided screws and

with the provided screws and washers you can easily pull different guitar bushings

there are three mounting holes for attaching to your workbench

Two Wide and Flat feet allow the gauge to sit stably on the frets to get more accurate relief measurement

And 2 spacers

Routing height can be set and locked on the Router Base

Notched Radius gauges binding with the provided screws andThis notched radius gauges set has notches, so it can work with the strings on, no need to take the strings off. Its a set of 4, 2 of them has narrow spaced notches for using near the nut, and the other 2 with wider space that works near the body. The set of 4 gauges come in 8 radii, they are 7. 25", 9. 5", 10", 12", 14", 15", 16" and 20". Made of stainless steel, laser cut, each being etched with the radius and NARROW WIDE Shipping & Return Shipping