This digital laser rangefinder has various measurement functions including single/continuous measurement, area measurement, volumes measurement, and Pythagorean measurement. The 40m laser ranging meter is designed for long-distance measurement, adopts high precise laser source, support continuous laser measurement and real-time refresh data, which provides a nice reference of vertical lines for the renovation project. ?Wide applications, suitable for road engineering, housing engineering, construction engineering, water conservation engineering, electrical power engineering, pipeline engineering, etc. Features: Compact, light and portable, convenient to carry out with you, and you can measure distance whenever and wherever you want. With high hardness aluminum alloy housing, wear resistance and drop resistance, effective dustproof, can provide long service time. High sensitivity focusing lens, quality laser module, low power consumption and long service time. LCD display with backlight, clear definition, you can see the measurement data clearly even in the dim environment. Support 3 units of m/in/ft to switch, metric and imperial units to switch, you can switch according to your needs. The 40m laser ranging meter is designed for long-distance measurement, adopts high precise laser source, support continuous laser measurement and real-time refresh data, which provides a nice reference of vertical lines for the renovation project.? One button distance measurement design, high bright laser light, error +/- 2mm, digital display can be accurate to 0.001m.? This meter has various measurement functions including single/continuous measurement, area measurement, volumes measurement, Pythagorean measurement, front and rear reference selection, addition and subtraction measurement. Equipped with measurement data storage function, support 20 sets of data storage, important data is not lost and easy to read. Wide applications, suitable for road engineering, housing engineering, construction engineering, water conservation engineering, electrical power engineering, pipeline engineering, etc. Specifications: Name: Laser Rangefinder Material: aluminum alloy Color: silver Battery: 1 * 3.7V, 300mAh battery (included) Display: LCD Range: 0.2-40m Measurement unit: m/in/ft Auto-off laser time: 30 seconds Measurement reference switching: Accuracy: +/- 2mm Laser Type: 620-670nm less than 1mW Auto-off time (no operation): 180 seconds Continuous measurement: Yes Area measurement: Yes Volume measurement: Yes Pythagorean measurement: Yes Battery indicator: Yes Data storage: 20 groups Working temperature: 0 celsius to 40 celsius Storage temperature: -10 celsius to 60 celsius Item size: 35 * 100 * 19mm / 1.38 * 3.94 * 0.75in Item weight: 60g / 2.12ounce Package size: 82 * 115 * 30mm / 3.23 * 4.53 * 1.18in Package weight: 80g / 2.82ounce Packing List: 1 * Laser Rangefinder