This 100M laser distance meter do distance measurement, area/volume and Pythagorean calculation and Add/Subtract (Length & Area & Volume) measurement. Great to use for the following applications: Interior decoration & design, and construction technology Construction project supervision & on-site inspection Real estate development and evaluation, fire evaluation Public facilities planning, landscaping planning and application in telecommunications industry Features: Measures distance with high accuracy With Front and end benchmark measurement (switchable) Displays max & min value simultaneously Compact size and lightweight With anti-slip lines for a comfortable and reliable griping With Battery condition indicator With Signal and Power indicator CE Marking Auto laser, power and backlight off function Specifications: Measurement distance: 100m(328ft) Measurement accuracy: ±3mm Unit types: 0.000m; 0.00m; 0.00ft; 0’0’’1/16; 0.0in; 01/16in (including m2 and ft2 for area and m3 and ft3 for volume) Test time: 0.1~3sec Laser type: II & 635nm &