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 angle in the range of 0-180, and quickly and conveniently measure length. Adjustable measurement: the protractor arm can locks in desired position with a knurled nut to quickly and easily identify angles Scope: very suitable for student drawing, DIY work, architectural design, carpenters and woodworking enthusiasts to measure bevel and length. Description: 1.The protractor has 2 in 1 angle and length measuring function. 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 more accurate. 3. Suitable for engineering, angle measurement, student drawing, architectural design, woodworking, length measurement. Specification: Material: stainless steel Size of the ruler: 197 x 14 mm Disc diameter: 90 cm / 35.5 inch Package includes: 1 pcs x Protractor