Use this Multipurpose Laser Level for hanging pictures, installing shelving,laying flooring, hanging wallpaper and more. Laser level picture hanging, self leveling, construction, laser leveler tool, laser level and measuring tape measurement ceiling, laser level cross, laser level center. This tool combines a tape measure, a three-position bubble level and a laser level into one tool. The tape measure is an 8-foot measure that includes imperial and metric linear measures, with graduations down to 1/32" and 1mm. Laser radiation, avoid direct eye exposure! ? A laser device is not a toy and must not be allowed to fall into the hands of children. ? Misuse of the device can result in permanent eye damage. ? Any correction measures that are aimed at increasing the laser power are forbidden. ?Please press the key button when you pull out the measuring tape, it would make the measuring tape better and easier using. ?Please loosen the key button to lock the reel when the measuring tape have been drawn out the length you wanted.Rotate the adjustable infrared,horizontal, vertical, fine-turning. If the laser is the Vertical Level or the Horizontal Level, you shouldn't adjust the Beam.? 3-PRONGED APPROACH - combines a fine-tuned tape measure, a triple-positioned leveling bubble and a NEW laser level to provide maximum results.?Note: Laser Ranging Error,that is given as "+/-2mm at 10m and 25m";If the laser is the Vertical Level or the Horizontal Level, you shouldn't adjust the Beam.) ? WORKS FOR INDOOR - designed for any situation where a straight line or accurate measurements are needed, such as measuring locations on a wall, space between hangers, level the nails. Regardless of the situation, it's completely plug & play. Note: Fades in sunlight or outdoor use. ? 8-FOOT Measuring Tape - comes loaded with an 8-foot measure that includes imperial and metric linear measures, with graduations down to 1/32" and 1mm.