The woodworking round circle ruler is small in size, convenient to carry, easy to use, and strong in practicability. It is suitable for woodworking use. This hole ruler is exquisitely made, has accurate scales and is easy to use. Features -Material: Aluminum alloy, stainless steel. -Size: About 14.60X2.80X0.85cm/5.74X1.10X0.33in. - Adopted of quality material, it is not easy to rust, fine grinding, accurate measurement. - Suitable for engineering, student drawing, woodworking engineering decoration, architectural design, carpentry. - The product is in a simple design, but it is very useful and practical. - Quality material with good durability and wear resistance, and can be applied for a long time. - It precise, versatile, and easy-to-use. Find the hole corresponding to the scale, insert the pen into the hole, and then rotate and draw the desired circle. Package list: 1 x hole ruler