Durable stainless steel: The angle measuring ruler is made of high quality stainless steel, easier to identify the precise angle, the product surface is polished, smooth, rust-proof, and can be used for a long time. Multi-functional design: 2 in 1 stainless steel angle ruler, can accurately measure the angle in the range of 0°-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, work DIYers, architectural design, carpenters and woodworking enthusiasts to measure bevel and length. Description: 1.The protractor has an angle measuring function and length 2 in 1. Made of high quality stainless steel, anti-rust, durable and long-lasting. 2. Metric scale, 180 degree rotation, multi-angle measurement, clear scale, wear resistance. Adjust the nut to fix the angle. The arrow pointer makes the reading angle