Ganwei Woodworking Height Gauge 0-50mm Aluminum Alloy Adjustable Tablesaw Depth Measuring Tool(Black)1. Material: aluminum alloy 2. Measuring accuracy: 1mm 3. Measuring range: 0 50mm 4. Usage: height depth measurement 5. Weight: about 88g 6. Size: about 11. 5 x 2 x 8. 9cm Features: 1. Made of aluminum by CNC machining, surface anodized, durable, wear resistant 2. Dual gauge scale, outer scale for height and inner scale for depth, easy to adjust the saw table 3. Intelligent design, the back of the skeleton design, reduce weight, increase the sense of