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 <1mW. Auto Laser Off after 30 seconds. Auto Power Off after 120 seconds. Continuous Measuring. Operating Temperature: 0 to 40°C. Power: 2 x AAA batteries (supplied). Weight (without batteries): 80.5g.