Versatile 2-in-1 Functionality: This protractor combines a ruler and a protractor, enabling precise measurements of both internal and external angles. Ideal for professionals in woodworking, architecture, and drawing, it features dual scales in millimeters and inches for added convenience. Ready to Use with Extra Battery: Equipped with a CR2032 button battery for immediate use upon delivery. Enhanced Visibility and Precision: Features a large LCD display for clear, easy readings. Accurately measures angles from 0 to 999.9 degrees with a precision of ±0.3 degrees and a resolution of 0.1 degrees, making it a reliable tool for detailed work. Advanced Measurement Features: Includes essential functions like lock, zero, hold, and reverse angle for versatile use. Lock the angle measurement at any desired point, or use the reverse function to view measurements in reverse mode, enhancing flexibility in all measuring conditions. Color:Black Material:ABS Package Contents: 1 * Digital Angle Finder Protractor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.