How would you like to do to get a time saving line alignment in distance? If there is no chance for users to make use of a high brightness Berlinlasers green laser line generator, nothing would be helpful at all. A manual line drawing tool is only workable for quite close distance and also taking a lot of time consumption. The real use of green laser module is getting free choices of optic lens degree within 10 degree to 110 degree, and then generating highly straight and fine green reference line on all working surfaces effectively.
This green laser line generator gets wide output power range from 5mW to 100mW. Besides operation under sunlight, it is easily getting quite clear and accurate line alignment from formal hand reaching until maximum work distance of 25 meters. This green laser module is not adjustable focus, however, users can also make free adjustment of laser line targeting direction and line thickness, and then achieving the clearest line instruction for laser cutting, laser car wheel alignment, military targeting and sand mill processing works etc.
http://www.berlinlasers.com/532nm-separate-crystal-lens-green-laser-line-generator