Features: Measure both length and angle with accuracy of 0.5 degree, this digital protractor is a good choice for family DIY projects, woodworking, decoration, machining. Hinge mechanism on the angle rule allows a full range of 0 to 360-degrees to measure inside outside and reverse angles. Equiped with full screen large LCD display, easy operation with only three press-buttons, easy to measure and easy to read. CR2032 3V lithium battery power supply, large capacity standby with automatic power-off function, can work more than 2000 hours. Thickened and widend nylon glass ruler with plastic engineering material, good rigidity, wear resistance, no deformation. Specifications: Material: plastic Size: 200/300mm 7.87/11.8in(optional) Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Digital Angle Finder