The wheel marking gauge is a must-have gadget when marking precision joints. The Newkiton wheel marking gauge can also be used as a depth gauge. 2 types of cutter meet your different needs. 1 cutter with bearing provides smoother cutting, works for soft wood, 1 locked cutter works for hard wood. Allows you to easily slice wood grain, make perfect cutting marks. 2 stages of adjustment, micro adjustment and coarse adjustment, they make adjustments more detailed and precise. Knurled adjustment knob and tail for faster and easier adjustment. er.20 cm. Precision ground steel shank, graduated 1mm for easy reference, ensures adjustments are accurate. The 1.5" diameter solid brass face can slide against the edge of the workpiece for smooth marking with or against the grain. The cutter retracts onto the face of the gauge for protection when not in use and easy vertical storage. Newkiton Wheel Marking Gauge Bearing Wheel Cutter with 2 Levels of Micro Adjustment - Coarse Adjustment - Precision Shank - Solid Brass Face