Laser Distance Meter Supports continuous measurement, area volume measurement, Pythagorean measurement, addition and subtraction measurement, area volume addition and subtraction, peaks, and self-calibration functions. This laser distance meter has the function of automatically calculating area and volume. When using this laser measuring tool, no manual calculation is required, which improves work efficiency. Portable Laser Distance Meter Waterproof and dustproof, dust will not affect the normal operation of the instrument and prevent water splashing from all directions from entering the instrument and causing damage. Easy to use, only one button and one measurement key are required for operation. Without climbing stairs, you can easily measure hard-to-reach areas, such as high ceilings. Made of aluminum alloy, its small body and compact design fit perfectly in your hand, provide a comfortable grip, and offer you convenient use. m/in/ft, 3 types of units, switch at any time.