Mileseey S2 IP54 Digital Laser Rangefinder, Distance Measurement Device with 2 bubble levels, LCD Backlight, m/inches/feet with Multiple Measuring Modes such as Pythagoras/Distance/Area/Volume, IP54Highly precise measurements: reliable length measurement from 0. 2 m to 100 m 328 ft with a measuring accuracy of 2 mm. One click button switches the units freely in m ft in ft + in; improved 2 spirit levels at the front or rear edge of the device as the starting point of the measurement select with 2 reference points, can be easier to find horizontal direction to make the angle measurements more accurate. Multifunctional: autosum function at the