If users are looking for an efficient and easy dot measurement, no matter it is processing at close distance or long distance, it is never an easy job for users to get ideal dot measuring results. However, laser tech engineer is also never stopping the mind to develop a quite practically used device of economy red dot laser alignment. When it makes the best use of import 650nm red laser diode and thermal emitting system inside high duration metal housing tube, this red laser module is just achieving super strong industrial stabilization, and highly clear and stable red reference dot projection onto various working surfaces.
http://www.berlinlasers.com/economy-red-dot-projecting-laser-alignment