DeWalt DW03050 165' Laser Distance MeasurerHighlights: Calculates area and volume automatic calculations make job estimates quick and easy Indirect height measurement uses Pythagoras to measure distances even when point A and or point B isn't accessible for linear measurement Memory unit stores last 5 measurements Durable design with overmolded housing 6' (2m) drop tested and IP65 water debris resistance 2 line backlit display helps improve screen visibility in both dim and bright conditions