Our angle finder is a very convenient woodworking tool in angle (inner and exterior angles) measurement, length (inches and millimeters) measurement, suitable for woodworking, adjusting angles of saw, vehicle maintenance and repairing, construction, drawing, etc. Features: High AccuracyThis digital angle finder allows a full range 0-360 to measure internal angle, external angle & contra angle measuring precision is 0.5, resolution is 0.05. You can switch between degrees and minutes to improve the measurement accuracy , meet your requirements for different accuracy. Digital Angle FinderThe protractor has metric(mm) and imperial(inch) measurements on ruler edge, plus accurate digital readout, can measure both angle(0-360) and length(0-190mm/0-7 inches). The angle ruler contains three horizontal bubbles, which can quickly confirm whether the ruler is horizontal, vertical, and flat. LCD DisplayThis protractor angle finder designed with full screen large LCD display, easy operation with only three press-buttons, easy to measure and easy to read. Data HoldDisplay has a hold function to freeze movement for accuracy.If you want to use data holding function, you need to press the HOLD button in red rather than twist the knob. (The knob is just for loosening and tightening. It can't hold the angle firm completely!) Power SupplyCR2032 3V lithium battery(not included) power supply, large capacity standby with automatic power-off function, saving power consumption and extending battery life. Wide ApplicationsSuitable for woodworking, adjusting angles of saw, vehicle maintenance and repairing, construction, drawing, etc. Specifications: Material: ABS Length: 0-230mm Measuring Range: 0-999.9 Working Temperature: 0~+50 Working Humidity: < 85%RH Working Current: