This high-precision angle meter has many features: professional chip, high-precision 0.01 degree and 0.001 degree resolution, engineering use, research and development, more stable work, laser function, and engineering needs. Very professional and very suitable for engineering R&D personnel. Features: High accuracy +/-0.005 degrees, high resolution 0.001 degrees. Lithium battery is rechargeable and durable. High resolution, professional measurement. Install the laser module for alignment. Dual and single axes feature user-friendly LCD display angles. V-shaped aluminum metal housing, easy to install in corners or pipes. 2-sided magnetic base with milled surface. Sounds an audible alarm within a settable angle range. Use a gyroscope for any angle measurement. USB to PC connection requires adapter. PLC Modbus RS485 connection with 6P6C socket, connect up to 255 units in a network. Specifications: Color: Black Plug Type: // (optional) Gravity Measurement Accuracy: 0 to 20 degrees: +/- (0.005 degrees)? ? ? ? ? ? ? ? ? ? 20 to 70 degrees: +/- (0.01 degrees)? ? ? ? ? ? ? ? ? ? 70 to 90 degrees: +/- (0.005 degrees) Measuring range: Single axis: 360 degrees, Dual axis: +/-40 degrees Resolution: 0.001 degrees Gyro measurement accuracy: 0.5 degrees Gyro measurement resolution: 0.1 degrees Gyro Instrument rotation speed: less than 50 degrees/second Laser output: 5MW Display response time: less than 0.6 seconds Audio sound: 60dB @ 30cm Zero offset drift angle per degree Celsius: 0.002 degrees (typical) Operating temperature: 0 to 50 degrees Celsius (32 to 122 degrees Fahrenheit) Storage Temperature: - 10 to 60 degrees Celsius (14 to 140 degrees Fahrenheit) User Interface: Monochrome LCD with backlight Power Supply: Rechargeable Li-Polymer 3.7V Charger Port: 5V 500mA Mini Type B USB Port Item Dimensions : Approx. 9.4*6.5*2.8cm/3.7*2.6*1.1 inches Product weight: Approx. 182.5g/6.4oz Packing size: Approx. 17*13*4.5cm/6.7*5.1*1.8 inches Packaging weight: Approx. 355g/12.5oz Packing list: 1 * Digital angle protractor 1 * AC adapter 1 * User manual