Product Features This section rangefinder is designed for convenient and accurate measurement of distance area and volume and design. Measuring range: 0.05~70m the measurement accuracy up to +/-1.5mm. Applicable to home decoration site surveying and mapping projects and other construction professionals. Features 1 Area and volume calculation function 2. Indirect measurement using the Pythagorean theorem 3 Plus and minus function 4 Continuous measurement function 5 Maximum and minimum distance tracking 6 Lighting displays and multi-line display 7 Beeper indication 8 Small size and comfortable feeling