I cannot control myself to recommend this advanced green laser line generator. It is just not an easy job to get super accurate line alignment with a simple line tool. Usually mistake cannot be avoided by manual line operation. In addition, users would have to spend a lot of time on prior alignment work before practical line generation work. The adoption of this advanced alignment laser line has just brought workers completely different experience.
The line generating from green laser alignment takes the lowest time consumption, the most rapid line targeting with low power supply and mistake. If users are interested in this genuine line tool, users might get more here:
http://www.berlinlasers.com/532nm-green-line-projecting-laser-alignment