Significant Services Johnson Level Tool 40-6502 Manual-Leveling Rotary Laser, Red, 1 Laser, Large Brand: Johnson DESCRIPTION With large and small scan modes that simulate a laser line and a manual-leveling feature in horizontal and vertical planes, this rotary laser is the perfect tool for any number of indoor or outdoor jobs. The rotary also features variable rotational speeds and a scan line that can be moved in either clockwise or counter-clockwise directions, whiles the simultaneous 90 split beam in vertical mode adds versatility. LASER LEVEL: This Johnson Self Leveling Kit is ideal for various indoor and outdoor jobs. Its small and large scan modes simulate a laser chalk line; while the horizontal and vertical planes provide the manual-leveling feature. MODES: The self-leveling rotary laser level may release a simultaneous 90 split beam in the vertical mode; increasing the level's versatility. This 4 ?AA? alkaline battery powered level has scanning modes like 0; 30; and 60. SCAN LINES: This manual-leveling rotary laser system features scan lines that can easily be moved in either clockwise or anticlockwise direction. This feature makes this level useful for a variety of applications in construction and more. ROTATIONAL SPEEDS: This manual rotary laser supports variable rotational speeds of 150-300 RPM. A variable RPM allows you to set the laser to the speed that provides the optimum visibility. APPLICATIONS: This rotary laser may be used to check cut and fill; set foundations and footings; concrete pours; septic tanks and basement excavations; acoustical ceiling and drywall; align and plumb walls; level deck floors; set drainage; terracing; and more.