EZ View 360 Deg Digital Protractor and Ruler, 5in/127 mm

Measures both inside and outside angles, as well as the length. 360 degree angle measurement. Dual Scale readings: 5'' 32nd/127mm Front and Rear. 7'' 32nd/400mm Front and Rear. Black anodized aluminum blades for better performance and stability. Laser etched measuring scales for better contrast and easy to read. X-large LCD digital displays in degrees. Easy grip locking nub locks the protractor at any angle. Zero at any position. Hold and Flip reading function. Reverse reading function. Reverse angle calcuation. Auto shut-off. Battery: 3V CR2032 included. Specifications: Measuring range: 0 - 360 degree. Display Resolution: 0.05 degree. Accuracy: +-0.2 degree. Repeatability: 0.05 degree.