This digital rangefinder has various measurement functions including singlecontinuous measurement area measurement volumes measurement and Pythagorean measurement. The 40m ranging meter is designed for long-distance measurement adopts high precise source support continuous measurement and real-time refresh data which provides a nice reference of vertical lines for the renovation project. Wide applications suitable for road housing construction conservation electrical power pipeline etc. Features: Compact 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 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 minft to switch metric and imperial units to switch you can switch according to your needs. The 40m ranging meter is designed for long-distance measurement adopts high precise source support continuous 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 error ± 2mm digital display can be accurate to 0.001m. This meter has various measurement functions including singlecontinuous 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 housing construction conservation electrical power pipeline etc. Specifications: Name: Rangefinder Material: aluminum alloy Color: silver Battery: 1 * 3.7V 300mAh battery (included) Display: LCD : 0.2-40m Measurement unit: minft Auto-off time: 30 seconds Measurement reference switching: Accuracy: ± 2mm Type: 620-670nm