DMiotech Laser Distance Measure 328ft 100m Mini Handheld Digital Laser Distance Meter Rangefinder Measurer Tape Diastimeter with LCD Backlight Red High accuracy and wide measuring range up to 100m. Quick measurement of distance, area and volume with one button operation Automatic calculation of area and volume. Indirect measurement by Pythagorean theorem. Min/Max distance tracking (display value) Easy addition/subtraction of measurement. Set up front/rear benchmark. Switchable among meter (m), inch (in), feet (ft.) Large LCD with backlight. Display illumination and multi-line display(4 lines). Auto correction and error report technology Widely used in construction and industries, especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, etc.