Under operation of highly clear and fine line alignment at quite long work distance, not easy to reach with any visible laser device or manual line drawing work, it makes advance job with a Berlinlasers 445nm blue line laser module within 50mW to 100mW. It projects moderate brightness and high intensity blue laser light directly from a 445nm blue laser diode. 16mm diameter tube made blue laser gets good thermal emitting and enables constant blue line alignment within 8 to 10 hours per day.
Being made with separate crystal lens within 10 to 93 degree and up to 24 hours aging preventing test, this blue laser line generator is working well with highly uniform and fine blue line emission in continuous use. It gets freely adjusted blue line fineness and line emitting direction. When it gets only 0.3mm line fineness at 10cm, 1mm to 2mm at 2 meters, it just brings users no mistake use for laser show, laser displaying, laser communication, laser medical therapy, high tech work etc.
https://www.berlinlasers.com/uniform-445nm-blue-line-laser-module
https://www.berlinlasers.com/445nm-separate-crystal-lens-blue-laser-line-generator