If there is no good idea for users to get super accurate dot positioning result, it is just a quite competitive price solution for users to make use of Berlinlasers blue dot laser alignment. It is a very nice and easy operated dot aligning tool, only after its connection with DC input power supply, it begins to generate super bright and visible blue reference dot immediately on required working surfaces. According to very simple screw of laser beam aperture part, intense blue laser beam converts into a quite compact size blue dot, making sure of the clearest dot instruction on all targeting surfaces effectively.
This blue dot laser alignment adopts high quality glass coated lens as its laser beam emitting source, which is assuring high cycling use of optic laser light and high laser beam transmittance. Although this blue laser module gets beginning high power of up 50mW to 100mW, when it is used at quite long distance, it still gets no appearance of laser light decay or blur in long term dot aligning work. Users should only make proper adjustment of laser beam focus and dot targeting direction, a correct output power made blue laser alignment gets no mistake aligning easily.
http://www.berlinlasers.com/blue-dot-laser-alignment