If you are trying to make extremely accurate dot alignment for those of high tech work fields, it would be the most marvelous experience for users to make good use of Berlinlasers green laser diode module. It is not only keeping the clearest dot instruction from 532nm green DPSS laser part, but also getting the smallest size green reference dot from its low laser beam divergence of less than 1mard. After very easy installation and adjustment of laser beam focus, this green laser module makes the most wonderful dot alignment for lab experiment, scientific research, laser medical use and other high tech fields etc.

This green laser diode module is using 3V or 4.2V DC input power supply, which takes no time to make change of battery, but also ensuring the highest speed dot alignment on different working surfaces. In addition, users are using this dot laser alignment tool as an accessory part, which is able to be installed on any device within wide distance of 0.5 meter to 3 meters, and then forming into the clearest dot instruction on any vertical or horizontal surface perfectly.
http://www.berlinlasers.com/520nm-green-laser-diode-module