In order to make highly precise and quick enough line alignment, it is operating easy and quick with a Berlinlasers 650nm red line laser module within 5mW to 100mW. The advanced use of adjustable focus optic lens enables easy adjustment of red line fineness. In addition, within the long extending distance of 25 meters, it makes good job for high precision and low price line alignment for various working surfaces.
Being made with qualified glass coated lens within 10 to 110 degree, this 650nm red laser line generator is projecting high linear quality and highly red line within 0.5 meter to 6 meters. It is projecting noncontact and no barrier line alignment. Unless it is pointing under sunlight, it makes good job for precise line alignment for laser cutting, sand milling, lumber machine, stone and wood processing work etc.
https://www.berlinlasers.com/650nm-red-line-laser-module