If users are getting special need of high level of accuracy line alignment at different work distance, it is just a quite nice job for users to make good use of Berlinlasers green line laser module. Owing to its easy equipment with qualified separate crystal lens, it is not only getting different line length, but also keeping same brightness green reference line within selectable length from 0.5 meter to 6 meters. This green laser module is generating focusable beam, however, users can still adjust laser beam aperture part to get different line thickness.
The real experience with green line laser module is much easier than any other manual line drawing tool. It is used without barrier of work distance, height, and other working environments etc. Noncontact green reference line also leaves no track on any raw material surface. When this laser line generator is selected with proper output power and optic lens degree, it is just getting no mistake line alignment for laser cutting, image processing system, military targeting, and sand mill etc.
http://www.berlinlasers.com/532nm-green-line-laser-module