Easy to Use:Adjustable thumb nut that securely attaches the ruler to the protractor, ensuring stability and ease of use. Easily measure angles from 0 to 180 with clear, laser-etched markings for accurate readings and long-lasting visibility. Adjustable Protractor Arm:Designed with a knurled thumb nut, the adjustable arm locks angles into the desired position for precision and convenience. Perfect for setting bevels, drawing radial lines, measuring, and marking angles, making it ideal for basic tasks and learning purposes High-Quality Construction:Made from stainless steel, this angle finder protractor is rust-resistant and built for durability, ensuring no deformation over time. A reliable tool for both professionals and students. Multi-Purpose Tool:Versatile enough for engineering, architectural design, student drawing, crafting, and length measurement. A must-have for craftsmen, designers, artists, and engineers looking for a dependable and multifunctional tool. Package Includes:1 x Angle Protractor with ruler?Measurement Range: 0 to 180,whether you are drawing a line or measuring an angle, you can meet your work needs at the same time, saving you time and effort.