Wide range of uses: Stainless steel angle protractors are important tools in many fields, used in machinery, crafts, construction work, construction and repair work, etc. basic At home, office and school. High-quality material: Our angle protractor is made of high-quality stainless steel, not easy to rust, with smooth edges, wear-resistant and long service life. Precision digital scale: Accurate scale, clear reading numbers and accurate measurement. The swing arm protractor reads centimeters and reads the angle mark, then adjusts the nut to fix the angle. Easy to measure: The 2-in-1 stainless steel ruler, protractor and measuring tool combination makes measurement easier. These protractors can not only be used to measure angles, but also can be used with measuring rulers to check the flatness. surface. Function: It is very suitable for painting students, DIY handicraft production, architectural design drawing, carpenters and woodworking enthusiasts to measure slope and length.