precision laser distance measurement 1.Display lighting 2.Measurement indoor or outdoor 3.Simple interface 4.Safe laser.. precision ... distance)6mm at 10m; 30mm at 40mAuto Power-off180sIlluminationAvailableContinuous Measurement,Pythagoras Measurement,Plane Area Measurement,Volume MeasurementAvailableAddition/SubtractionAvailableBattery life (Type AAA, 2×1 ...