High-Precision Handheld Infrared Measuring Ruler $ 16.86 Product information: Color classification: A: 40 meters precision battery type + universal horizontal bubble (lanyard + 2 AAA batteries) B: 40 meters indoor and outdoor reinforced type + universal horizontal bubble (<0.001 arc divergence + high-intensity laser) C: 50 Mi precision battery + universal horizontal bubble (lanyard + waist bag + AAA battery) D: 50 meters indoor and outdoor reinforced version + universal horizontal bubble (<0.001 arc divergence + high-intensity laser) E: 50 meters voice charging + electronic Level (USB direct charge + live voice function) Working principle: Laser ranging distance: 40M Hand-held laser rangefinder decoration and construction content: installation engineering Packing list: 1 x handheld laser rangefinder