The engineered gauge perfect for plumbers, woodworkers, automotive , crafts, and much more. Enable you to create accurate, instant of curves, edges, or any other shaped area. Whether you’re a carpenter or a jack , this is the perfect tracing tool. Works on a variety of materials including wood, tile, plastic, laminate, metal, brass, aluminum and more. Features - Color: Blue. - Material: ABS. - Size: 19.50 x 13.00 x 3.00cm/ 7.66 x 5.11 x 1.18 inch. - The stable lock system in our gauge could keep the shape and as it is with no move out of form. - So you can profile, copy and trace the outline more accurately and easily wherever you need. - With and updated craftmanship, it allows you to push the profile gauge very smoothly and precisely. - Outstanding look to read the scale even in weak light environment. - Considering of some scenarios where you need to some deep shapes and angles, we increase width ensure you can measure depths easily and precisely record the cross-sectional shapes. Package list: 1 x ruler