Durable stainless steel: The angle measuring ruler is made of high-quality stainless steel, the accurate angle is easier to identify, the product surface is polished, smooth, rust-proof and can be used for a long time. p> 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, architectural design, carpenters and woodworking enthusiasts to measure bevel and length. Scope of application: Very suitable for student drawing, DIY, architectural design, carpenters and woodworking enthusiasts to measure bevel and length.