For precise sharpening, setting the proper angle is crucial. Tormek makes it easy with this ingenious angle setter. We designed it for the Tormek sharpening systems, but the woodworking community out there let us know it works with other sharpening systems as well (Grizzly, Jet, etc.) It sets the angle in relation to your stone, so even if the stone is worn, the proper angle will be set. You can even use it to measure the existing angle of your blade, so there are no mistakes. In terms of numbers, you can use this on any stone diameter from 250 mm (approx. 10 inches) down to 150 mm (approx. 6 inches). The angles achievable measure from 10-to-75 degrees, so almost any conceivable blade angle can be cut. The tool also features magnets to keep it in place during use, and for easy storage.