Without any serious relying on any manual labor force input, once line alignment is processing at long distance, it is the best job to operate a high density beam emitting 445nm blue line laser module. It emits ultra bright blue laser light from a 445nm blue laser diode directly. Only after the use of a 16mm diameter metal housing tube, it enables freely installed distance of 3 meters and quite easy reaching of blue line projection in continuous use.
Being made with qualified glass coated lens and glass window, cooperating with strict laser beam stability, this laser line generator just keeps work with ultra fine and clear blue line projection within 0.5 meter to 6 meters line lengths. It also gets perfect protection of itself under moisture or dust. Within long lasting work time of 10 hours, it always makes ultra stable and no decay light line generation for multiple fields effectively. 
Applications: laser show, laser displaying, laser communication, optical instrument, military targeting, scientific experiment