ALIGNMENT AND POSITIONING USING LINE LASER

red laser line
green laser line

LAP industrial line laser are used to show working lines or edges for alignment and positioning.

They may be used to display lines, where material has to be cut, folded, glued, welded or just positionned. 

Line laser for circular saws

parallax error

If you use line lasers, you have to take care of the angle between laser beam and surface. Only a line from a laser in exact perpendicular position to the surface doesn't change its position when the distance to the laser changes. This phenomenom is called parallax error.

Beam line laser