Clear Scale: The black scale on this folding ruler protractor is clear, easy to read, and resistant to wear and tear for a long life. Practical Measuring Tool: This ruler can be used not only in students' study life, but also in woodworking, which is a very practical measuring tool. Multi Angle: This ruler supports multi angle measurement and has multiple uses, combining a straightedge and a protractor into one. Frosted : The of the ruler is frosted, which looks more textured, and the ruler is not easy to slip on the paper . Folding Ruler: This ruler can be folded up for storage and can be placed directly in your stationery box when not in use, taking up no space., Manufacturer: WINH