In process of highly clear and fine line alignment at quite long work distance, not relying on the use of a manual line drawing work, it makes good job with a direct diode made Berlinlasers 445nm blue laser line generator. It projects moderate brightness blue laser light directly from a 445nm blue laser diode. Only after correct use of 5V, 9V 1000mA DC power supply, it keeps work with constant blue laser beam and blue line alignment within great distance of 25 meters.
This blue laser line generator applies qualified separate crystal lens within 10 to 93 degree. It projects highly uniform and fine blue line within 0.5 meter to 6 meters. After its freely adjusted line fineness and line emitting direction, it gets high fineness of 1mm to 2mm at 2 meters, and makes good job for industrial precise line alignment, laser show, laser displaying, laser communication, optical instrument etc.
https://www.berlinlasers.com/445nm-50mw-80mw-100mw-blue-line-laser-module
https://www.berlinlasers.com/uniform-445nm-blue-line-laser-module
https://www.berlinlasers.com/445nm-glass-lens-blue-laser-line-genrerator
https://www.berlinlasers.com/445nm-separate-crystal-lens-blue-laser-line-generator