Real-time angle measurement, one-key to measure the object angle and height Using high-quality PC material diffused curved lens, brings accurate measurement, fast speed, low power consumption and long service life 0.5s fast measurement, mainly adopting filtering algorithm and spectroscopic lens technology measurement, the speed is improved, making measurement easy and convenient The large display screen is brighter, clearer, less granular, and has a high color pixel grain structure 20 groups of data records, more convenient for viewing and memory With the mute key setting, you can turn on and off the sound at any time Suitable for using this function in quiet places such as classrooms and libraries 8 measurement modes to meet daily measurement needs and make measurement easy and convenient Specification: Maximum measuring range: 50m Measurement accuracy: ±2mm Measurement unit: m/ft/in/ft+in Laser grade: class 2 Area and volume measurement: support Indirect Pythagorean Theorem: support Addition and subtraction: support Continuous measurement: support Min/Max: support Beep: support 4-line backlit display: support Single-time height measurement: support Historical memory: 20 groups Button: soft rubber button Working temperature: 0°C-60°C Battery type: AAA 2x1.5V (not included) Auto laser off time: 30 seconds Auto instrument off time: 180 seconds Size: 115*50*28mm Weight: 120g