In order to make highly precise line projection at longer work distance than formal hand reaching, it is a very nice solution to try Berlinlasers 445nm blue line laser alignment. It projects formal brightness blue laser light directly from 445nm blue laser diode. It is only adopting small size tube diameter of 16mm, owing to special use of metal heat sink cooling system inside metal housing tube, this 445nm blue laser module achieves perfect thermal emitting and increasing stability blue line projection in continuous use. This 445nm blue line laser alignment applies qualified glass coated lens or separate crystal lens. It enables freely selected fan angles of 10 to 110 degree. It generates high linear quality blue line with different line lengths and line fineness. When it gets proper adjustment of laser beam focus and installation onto desired machine or device, it achieves highly precise and rapid blue line projection onto multiple surfaces effectively. Technical data: Item: Berlinlasers 445nm blue line laser alignment Output power: 50mW, 80mW, 100mW Laser class: IIIb Fan angles: 10-110 degree optic lens Line lengths: 0.5 meter to 6 meters Power source: 9V 1000mA AC/DC adapter Applications: laser show, laser displaying, military targeting, laser medical therapy, industrial laser line alignment etc http://www.berlinlasers.com/blue-line-laser-alignment