electric guitar bass radius fretboard free arc tool

Made of brass, long time and durable use.Each one is marked with number for easy recognization.Easy and accurate fretting on different radiused fretboards.Just place the right insert in the caul.Colour:BrassMaterial:BrassSize:63x85x18mmPackage Contents:9x radian ruler (725 radians, 95 radians, 10 radians, 12 radians, 14 radians, 15 radians, 16 radians, 17 radians, 20 radians)Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.