If users are looking for highly precise and fine cross line projection at quite long work distance, it is perfect experience to adopt a 30mW 650nm red cross laser alignment. It projects highly intense and powerful red laser beam from 650nm red laser diode. After perfect configuration with metal heat sink cooling system inside durable metal housing tube, it is always achieving superior nice thermal emitting and increasing stability red cross line source projection constantly. In process of continuous cross line projection, 30mW 650nm red cross laser alignment applies qualified glass coated lens with different fan angles and special use of glass widow in front of laser beam aperture. It is preventing any possibility of laser light decay under moisture or dust. After 650nm red laser module gets correct fan angle glass lens and proper adjustment of laser beam focus, it assures no mistake and no barrier cross line alignment in all occasions effectively. Technical data: Item: Berlinlasers 30mW 650nm red cross laser alignment Laser class: IIIb Optic lens: 10, 15 and 110 degree glass coated lens Cross line lengths: 0.5 meter to 6 meters Adjustable focus: yes Applications: laser alignment for screen printing system, laser medical therapy device, lab experiment and lab experiment http://www.berlinlasers.com/economy-red-cross-projecting-laser-alignment