Features： It comes with a large LCD screen and is a lightweight, portable tool for your measurements. The built-in strong magnetic base allows you to connect your device to any ferrous material. It is an ideal angle gauge that can improve many areas such as housing, architecture, woodworking, machinery and more. The large LCD display is easy to read for quick viewing, and the green backlight allows you to read measurements in dim light. Press the hold button to save the angle measurement readings for easy recording and inspection of measurement data. Specifications： Color：1,2,3,4（optional） Measuring Range: 4 × 90° Screen Resolution: ±0. 01° Working Temperature: 0°C - 40°C Storage Temperature: -10°C - 50°C Waterproof Rating: IP54 Power: 2*AAA (without battery) Size: 54 * 56 * 26mm / 2.12 * 2.20 * 1.02in Weight: 80g / 2.82oz Package List: 1 * Measuring Instrument 1 * Instruction Manual