Kreg Precision Miter Gauge requires no calibrating, and features positive stops at 0°/ 10°/ 22,5°/ 30° and 45°, making it easy to cut or mill miters quickly. Of course, when you do want to cut a more complicated angle, the easy-to-use Vernier scale allows for fast adjustments to 1/10th of a degree. This miter gauge will give you better, more accurate cuts to ensure project success. No Play in the Miter Slot using extremely straight 610mm anodized aluminum bar that is 9,5 mm thick by 19 mm wide.