This meter is 3in1 design digital laser rangefinder, laser ranging, 5m tape measure, and laser cross-marking, all in one. It has various kinds of measurement functions including single/continuous measurement, area measurement, volumes measurement, and Pythagorean measurement. Equipped with historical data memory function, it can holds max 20 groups of data. Wide applications, suitable for road engineering, housing, construction engineering, water conservancy engineering, electric power engineering, pipeline engineering, etc.. Specifications: Name: 3in1 Laser Rangefinder Material: ABS+TPR+coated manganese steel Battery: 2 * 1.5V AAA battery (not included) Laser measuring ranges: 40m, 60m (optional) Resolution: ±2mm Measurement unit: m/in/ft Laser type: 635nm≤1mW Automatic laser shutdown time: 30 seconds Automatic shutdown time: 180 seconds Data store: 20 groups Tape measure working ranges: 0-5m Minimum scale: 1mm Tape width: 19mm Unit: Imperial system and metric scale Ruler belt material: 65 manganese steel Working temperature: 0-40℃ Store temperature: -10℃ to 50℃ Item size: 85 * 82 * 56mm / 3.35 * 3.23 * 2.20in Item weight: 270g / 9.52ounce Package size: 125 * 125 * 60mm / 4.92 * 4.92 * 2.36in Package weight: 300g / 10.58ounce Packing List: 1 * Laser Rangefinder