Features: 1Angle level meter the angle range is 0225 the measurement accuracy is 0.5 and the increase or decrease angle is 0.1. 2With horizontal and vertical bubble level it is mainly used for testing and calibration for easy measurement. 3Support automatic shutdown after 5 minutes to extend battery life suitable for interior designers. 4Equipped with a backlit LED display so that the data can be read clearly even in very dark conditions. 5With data hold function need to press the red knob (the knob is only used to loosen and tighten and cannot completely fix the angle). Specification: Condition: Brand Item Type: Angle LevelMaterial: Aluminum AlloyColor: SilverWeight: Approx. 513g / 18.1ozSize: Approx. 41.6x5.3x2.3cm / 16.4x2.1x0.9inBattery Parameters:Battery Type: Laminated BatteryBattery Model: 6F22Nominal Battery Capacity: 800MAhMeasuring Range: 0-225Increase/Decrease Angle: 1Measurement Accuracy: 0.5Automatic Shutdown: After 5 MinutesWorking Temperature: -10-50 Package List: 1 x Angle Level (Battery Not Included)1 x Storage Bag1 x English Manual Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Don't let the backlight for a long time.