Under operation of highly precise and fine line alignment at long work distance, it is not easy to reach with manual line drawing work, it makes more efficient job with... moreUnder operation of highly precise and fine line alignment at long work distance, it is not easy to reach with manual line drawing work, it makes more efficient job with Berlinlasers 50mW 488nm blue line laser module. It keeps work with high brightness blue laser light emission, and high linear quality blue line alignment from a qualified glass coated lens or Powell lens. Available with wide fan angles of 10 to 110 degree, only after correct use of optic lens fan angle and output power, it makes sure of high precision and high fineness line generation for all raw material processing works effectively. less