Woodworkers Edge Ruler Protractor Angle Two Arm Ruler Angle Measure Tool Crafts Feature 1. Two- in - One Protractor Ruler Functions' Combination - The combination of ruler and protractor makes it can measure length (0-25cm/0-10 in) by fixed ruler and measure length (0-30cm/0 11.8 in) by moving ruler . Measure length with inch and centimeter marks makes measuring eaily .By fixed ruler Protractor measures 0 to 180 degrees left to right and right to left. 2. Adjust Nut Swing Arm 0-180 Degrees - Adjustable protractor arm locks into desired position with knurled thumb nut to quickly and easily identify angles .You can fix the angle.Suitable for setting bevels, draw radial lines, measuring and marking angles . 3. Precision For Use - Graduations on the base and rule are precision -laser etched and then black filled for long life and easy readability. -laser etched measurements offer clear reading years' usage. You can get the information accurately and quickly. 4. Durable Stainless Steel - Made of high quality Stainless Steel for longer durability , abrasion resistance. Stainless steel edge is sharp, please be cautious while using AND KEEP IT AWAY FROM YOUR LITTLE ONE. 5. Can Disassembled & Widely Use - The protractor ruler arm and the dial head can be disassembled. The locking function can lock the measurement at any angle or position. Perfect for students, machinists, carpenters and woodworking hobbyists,vehicle maintenance and repairing, construction, drawing for draw radial lines, setting bevels and transferring angles. Package Included: 1x ruler