... technology with own patent Measuring Range:0.05 - 40m Laser Distance Meter DMI-40M Specification:1.One button operation,convenient and prompt.2 ... measurement 6.Compact design:only 23mm thicknessMeasuring Range:0.05 - 40m Measuring Accuracy:±2mm Laser Type:650nm, <1mW, Class 2 Operating ... Auto Scale Technology:Available Historical Memory:Available Laser Distance Meter DMI-40M