Not easily relying on any manual line projecting device, in order to make much more convenient line projection at great distance, it would be quite easy job to make use of Berlinlasers 50mW blue line laser alignment. It generates moderate brightness blue laser light directly from 445nm blue laser diode. Usually it selects external DC power supply and inner tube cooling system, it is not only keeping continuous blue laser beam emission, but also keeping highly clear blue reference line with good stability. The genuine line projection with 50mW blue line laser alignment enables freely selected optic lens. Either it is selecting glass coated lens or separate crystal lens, without any appearance of laser light decay or blur, it keeps work with high linear quality blue line projection. Users should get basic learning of line length, line fineness and work distance, this laser line generator enables freely selected optic lens degree of 10 to 110 degree, which just achieves no mistake and quick response blue line projection in distance. When it gets proper installation and adjustment of both laser beam focus and laser line targeting direction, it makes easy line projection for formal lighting and long distance effectively. Technical data: Item: Berlinlasers 50mW blue line laser alignment Wavelength: 445nm Laser class: IIIb Optic lens: 10-110 degree glass coated lens, separate crystal lens Adjustable focus: yes Applications: laser show, laser displaying, sand milling, lumber machine etc http://www.berlinlasers.com/blue-line-laser-alignment