XIANQI Two-in-one Design:The ruler and the round head protractor are used in combination, which is enough to meet your different use needs. It is used to set the bevel angle and measure and mark the angle. Protractor marking range: 0-180 degrees, ruler marking range: 0-10cm. Clear Reading:The protractor woodworking are precision laser etched, which is not easy to wear or fade, and the marks and numbers are clear and easy to read (metric scale). Can help you obtain information accurately and quickly. It is a professional tool for drawing or measuring angles or lines. Adjustable Nut Design: The engineers protractor adopts an adjustable nut design, and the caliper angle can be locked at will for scribing measurement according to measurement requirements. It is suitable for setting oblique angle, drawing radial line, measuring and marking angle, etc. The ruler and dial can be removed. Durable Stainless Steel Material:The stainless steel protractor is made of high-quality stainless steel material, strong and durable, not easy to rust, and can be used for a long time. In addition, the edge of the 10cm ruler is delicately polished and smooth. When the reading is fixed, the screw can be tightened for easy operation. Multifunctional Goniometer:The scale of the goniometer is accurate, and it is an ideal choice for students, mechanics, and carpenters to measure and mark. Suitable for engineering, angle measurement, student drawing, architectural design, woodworking, length measurement.Specifications Material: Stainless Steel Color: Silver198*52mm Packing Includes: 1 * Detachable Rotary Protractor