If there is no other better method for user sot get clear enough line alignment at a bit longer work distance, while it is just the good chance for users to have a try of Berlinlasers blue laser line generator. Only after quite simple connect with high operating voltage of 4.2V DC input power supply, blue laser module begins to work and make super clear and high speed blue laser line instruction on different working surfaces.
Blue laser line generator is beginning with high power range of 50mW to 100mW 445nm blue laser diode, which is always workable for quite long distance and high lighting line alignment works. Only if users are making cautious measurement of laser line length, line thickness and work distance from laser beam aperture, users can get proper recommendation of output power and optic lens degree, this 445nm blue laser module makes line alignment for both industrial line alignment and high tech line positioning use etc. Users should just be cautious enough with powerful blue laser light and avoid eye exposure to powerful blue laser light, this blue laser module makes no mistake line alignment easily.
http://www.berlinlasers.com/445nm-glass-lens-blue-laser-line-genrerator