Want to adjust the tightness of by yourself to match different objects? Yes, by using the screwdriver present in box to adjust the Tightness screw between loosen and tighten. Adjust to the perfect tightness fitting for you and the targeted objects by yourself. Features - Color: Blue. - Material: ABS. - Size: 19.50 x 13.00 x 3.00cm/ 7.66 x 5.11 x 1.18 inch. - It can be used to measure the shape of irregular items and is used to mark instant templates for precise tile cutting. - With this , you can copy shapes and match incisions for accurate measurements. - Work in , car body, car sheet metal, stainless steel or any repeat. - Suitable for any shape, such as ceramics, , tiles, laminates, carpets, winding tubes, round frames, channels and many items. - No bump on each smooth pin, you can push to profile the objects so flexibly without any stuck points or expansion. Package list: 1 x ruler