The Roughneck P50 Laser Distance Measure has a compact design and a soft grip rubber case that prevents slipping during measurements. Made with Leica's M3i chipset to provide reliable, accurate measurements. It offers: automatic area, volume and Pythagoras calculations. Addition, subtraction and reference point selection (front/rear) are also added to ensure all on-site measuring tasks are accounted for quickly and accurately. The inverted display provides improved visibility in bright light. Specification: Range: 0.21-50m (8.1/4in - 165ft) Accuracy: ± 3mm Smallest Unit Displayed: 1mm (1/16in) Laser Class: Class 2 / 635nm