Measurement range: 0.05 - 50.00 m; Accuracy: +/- 1.5mm (accurate up to 3 decimal places); 99 data memories, switchable units (meters, inches and feet ); Optical lens: with two photosensitive holes, the measurement data is more accurate and more stable; With calibration and error report functionVarious Functions: Measure distance, area, volume accurately, Pythagoras function (indirect measurement), continuous measurement function, add or subtract measurements, min and max value; Automatic shutdownMute function: Mute function to avoid noise; 4 lines of large screen LCD display with backlight; Rugged shockproof housing with protection class IP54 (splash and dust proof) for a long service life, also suitable for damp or dirty environmentsEasy to use: With the press of a button, you can quickly check the height and length of the building, or the area and volume, suitable for DIY enthusiasts and professional CE / FDA / FCC / RoHS certification, widely used on construction sites and in particular in apartments, buildings, factories and warehouses etc