Makita Laser Distance Measure (30m) is a fast and convenient measuring solution for professionals It has a distance measure of 30m and accurancy of ±2mm The device has 7 measurement functions; volume, area, distance, min/max, permanent, addition/subtraction, Pythagoras (2point), Pythagoras (3 point) The long lasting battery delivers 5,000 measurements for continous work time It can record the last 5 measurements taken The device features an auto-power off function which shuts down the device when left idle It has easy-to-use screen and interface buttons The exterior shell is dust and water resistant with IP54 rating This product is compact and lightweight for easy storage and portability Technical Data: Unit of measure: 1mm; Laser diode: Class II, 635 nm; Measuring range: 0.05 - 30m