Extech DT300 Laser Distance MeterExtech DT300 Laser Distance Meter Laser Distance Meter Laser measurement accurate to 0. 06 inches With Historical Storage that recalls the previous 20 records (measured or calculated results) Key Features: Measures from 2" to 164' (0. 05 to 50m) Automatically calculates Area and Volume Indirect measurement using Pythagorean theorem Continuous measurement function with Min Max distance tracking updates every 0. 5 seconds Addition Subtraction Front or