In any type of highly clear and accurate dot measuring work fields, not easy to rely on the use of a simple blue laser pointer or other manual dot projecting tool, it is always making high efficiency solution after the selection of a 50mW blue laser diode module. From the very beginning design of this industrial blue dot laser, it makes good use of thermal emitting system and qualified optic lens, after configuration with durable aircraft used aluminum alloy housing tube, it always makes sure of easy installation, and convenient blue reference dot projection at great distance and formal lighting working occasions effectively. Being made with an import 445nm blue laser diode, not simply used for temporary dot positioning works, the real use of 50mW blue laser diode module is always continuing for quite long time, and still maintaining highly stable and reliable dot projection. The special design part of metal heat sink cooling system is cooperating with highly durable aircraft used aluminum alloy housing tube, only after proper use of 16mm diameter metal housing tube, this 445nm blue laser module just achieves excellent thermal emitting, and increasing laser beam stability in long time use. Being made with an external AC/DC adapter, the real dot measuring work with 50mW blue laser diode module gets no need to make alkaline battery power source change. After the use of 5V or 9V 1000mA DC power supply, accepting wide range electric current of 100V to 240V, this blue laser module is always applying for various working environments, but also achieving highly stable performance under any other harsh working occasion of mechanical moving or shocking etc. Within wide range operating temperature of -10 degree to 45 degree Celsius, it is always maintaining good performance and highly clear dot indication at great distance of 25 meters. Whatever kind of industrial and high tech dot measuring work fields, with the assistance of a laser alignment mounting bracket and extending electric wires for both blue dot laser alignment and DC power supply tail parts, it enables the maximum installed distance of 3 meters, and quick blue dot indication onto any vertical or horizontal surface. After special use of adjustable focus optic lens and immediate blue laser light concentration, this blue alignment laser gets the most compact size blue dot in distance. Any time users are paying high attention to thermal energy hurt to eyes and wearing correct laser safety goggles, high power blue laser module makes high security and high speed dot alignment perfectly.