DEWALT DW03101-XJ 100 M Laser Distance Measurer for DistanceAreaPythagorasVolume Measurement with Colour Screen and Memory storage (330 Ft.)BrandDewaltAre Batteries IncludedNoColourBlackMaterialPlasticItem Weight154 GramsAbout this itemTriangular area calculation to provide angle measurementWorking Range: 0.1-100 mIP Rating: 65; Laser class: 2Pythagoras indirect height function will allow to measure distances even when point A and/or point B isn't accessible for linear measurement330-foot laser distance measurer has the ability to calculate area and volume, making job estimates quick and easy with automatic calculations and an additional triangular area function