Extech Laser Distance MeterLaser measurement accurate to 0.06 inches at 32 feetFeatures:Measures from 2" to 164 (0.05 to 50m)Historical Storage recalls the previous 20 records (measurements or calculated results)Automatically calculates Area and VolumeIndirect measurement using Pythagorean theoremContinuous measurement function with Min/Max distance tracking updates every 5 secondsAddition/Subtraction, Front or rear edge referenceLow battery indicator, Auto power offComplete with carrying case and 2 AAA batteries