What is the best job to make highly clear and fine line alignment? When some of working surface is not easy to reach, not able to work at all with those of manual or mechanical line aligning tool, it is always making good job with a high brightness beam emitting tool, such as a 515nm green laser line generator. In various precise line aligning work fields, on basis of advanced use of separate crystal lens with different fan angles and constant power source supply, this compact size tube made 515nm green laser module should only get proper installation onto those of machine or device, it just assures high level of accuracy green line alignment in continuous use.From the very beginning design of 515nm green laser line generator, it is paying high attention to its thermal emitting system. It is applying an import 515nm green laser diode as beam emitting source. Different from a simple green laser pointer, it is adopting external electric power source. After the use of 5V, 9V 1000mA DC power supply, it is not only leaving enough space for tube cooling down, but also achieving increasing laser beam stability within constant green line alignment of 8 to 10 hours per day. According to advanced use of separate crystal lens within 10 to 93 degree, not able to work with laser light decay or dim, this 515nm green laser line generator always assures the best quality green laser light source in continuous use. It is emitting non Gaussian distribution green laser beam, and up to 85% uniformity green line projection. When it is pointing at close or long distance, this 515nm green laser module is performing well with the same line brightness from middle part towards both ends. When users are getting basic measurement and experiment of line length, line fineness and work distance, only after correct use of output power and optic lens degree, it is able to make high precision line alignment within the maximum work distance of 25 meters.Under operation with extending electric wires for both 515nm green laser line generator and DC power supply, within freely installed distance of 3 meters, it is allowing the most convenient installation, and quick line generation onto any vertical or horizontal surface. For the most important of all, after its freely adjusted laser line fineness and line projecting direction, this green alignment laser makes sure of the most efficient laser light conversion and provides the highest level of accuracy line measurement in all application fields perfectly.