It is not an easy job for users to get clear enough dot targeting in distance. However, once users are giving up the use of sticker, laser pointer, or others, it would be the most moment for users to make good use of a Berlinlasers green dot laser alignment. It is keeping constant green reference dot targeting from laser beam aperture part. Instead of simple equipment with alkaline battery, only if this green laser module is equipped with external DC input power supply, it is just keeping constant and highly accurate green reference dot targeting on required working surfaces.
This green dot laser alignment gets good use of qualified glass coated lens. Once dot targeting is processed at various work distance, a correct power made green laser module is just making the clearest dot instruction for close distance, long distance, high lighting working occasions etc. Users can also make quite easy adjustment of laser beam, high intensity green laser beam has just converted into a small size green dot in use. When green laser module gets proper adjustment of dot targeting direction, it makes no mistake measurement easily.
http://www.berlinlasers.com/532nm-green-dot-projecting-laser-alignment