When users are looking for an easy operating and quick response cross line projection at long work distance, it is making good job with Berlinlasers 50mW 445nm blue cross laser alignment. It projects highly intense blue laser light and the most complex two perpendicular blue lines with accurate 90 degrees. This 16mm diameter metal housing tube device enables easy installation, good direction and good direction cross line generation for laser alignment for screen printing system, heat transfer machine, laser show, and laser displaying etc.