In order to make highly clear and accurate dot measurement at long work distance, not operating under sunlight, it makes good job with a visible beam emitting tool of 100mW economy red dot laser alignment. It is applying for various industrial precise dot measuring work fields. The unique use of metal heat sink and APC, ACC driving circuit board are assuring highly reliable red dot projection and no laser light decay. 
This 650nm red laser module is applying for various working environments. It adopts durable anodized aluminum alloy housing tube, which is bearing wide operating temperature and other harsh occasion etc. Within freely installed distance of 3 meters, not limited by long distance or high height, it brings users the most precise dot measurement for drilling system, laser marking, laser engraving, high tech and lab experiment work etc.
https://www.berlinlasers.com/economy-red-dot-projecting-laser-alignment