65 Meters Laser Distance Meter (LDM-100) Features: These professional Laser Distance Meters are designed to give special users a high accuracy, one person distance measuring and estimating tool to measure remote and difficult reaching places. The compact and handy base model was specifically designed for indoor applications. Shortcut keys for addition, subtraction, Pythagoras, area and volume calculation make measuring fast and very reliable. The last 20 measurements are also stored. Specifications: Measuring Range: 0.05 to 65m(0.15ft to 213.2ft) Measuring accuracy: ±1.5 mm (± 0.06 in) Smallest unit displayed: 1mm Measuring units: m,in,ft Laser: Class II 635nm,<1mW Waterproof: IP 54 History measurement records: 20 Keyboard Type: Soft-Touch Keypad Operating Temperature: 0°C to 40°C (32°F to 104°F) Storage Temperature: -10°C to 60°C(14°F to 140°F) Battery Life: Up to 4,000 measurements Batteries Type: 2 x 1.5V AAA Auto. laser switch-off: after 0.5 min Auto instrument switch-off: after 3 min Size (HxWxD): 115mm x 48mm x 28mm Weight: 135g