If there is not quite clear dot targeting at quite long work distance, nothing would be much more effective than the use of Berlinlasers high power blue line laser alignment. It is just keeping direct diode emission from high power 445nm blue laser diode. It is getting beginning high power of 150mW to 500mW, equipped with quite nice thermal emitting system of metal heat sink cooling system and APC driving circuit board, this blue laser module just keeps constant output power and the most stable blue line targeting in long term use.
This high power blue dot laser alignment makes use of the best quality glass coated lens. At quite long line targeting distance, it is still keeping high linear quality and no appearance of laser light decay or blur in long term use. Within its wide range optic lens degree of 10 degree to 110 degree, this blue laser module gets different line length and line thickness, which is just getting ideal line aligning performance for laser show, laser displaying, military targeting, and communication etc.
http://www.berlinlasers.com/blue-line-laser-alignment