This is the standard radius/bend gauge used by Olympic, World, and National team athletes, along with their coaches and training centers around the world. Absolutely eliminates the guess work in determining, fine tuning and maintaining your blade radius and bend. Perfect for short track or long track, single and multi radius, straight or bent blades. Pin point flat spots, high spots, kinks, etc. Accurate to .00005". CNC milled aluminum construction with carbide contact surfaces designed for a lifetime of exacting measurement. Includes flat carbide and ball point contacts, calibration straight edge, radius/bend chart, and instructions.