Durable Stainless Steel: The angle measuring ruler is made of high-quality stainless steel, making it easier to identify the accurate angle. The surface of the product is polished, smooth, rust-proof, and can be used for a long time. Multifunctional Design: 2-in-1 stainless steel angle ruler can accurately measure the angle in the range of 0° to 180°, and quickly and conveniently measure the length. Adjustable Measurement: The protractor arm locks in the desired position with a knurled nut to quickly and easily identify angles. Scope of Application: Very suitable for student drawing, DIY work, architectural design, carpenters, and woodworking enthusiasts to measure bevel and length. Scope of Application: Very suitable for student drawing, DIY work, architectural design, carpenters, and woodworking enthusiasts to measure bevel and length.