ALIGNMENT AND POSITIONING USING LASER POINTERS
LAP industrial laser pointers are used to show working points or for alignment and positioning.
They show the point, where a tool starts working, or they are fixed optical stops that define the position of a certain part or tool.
If you use laser pointers, you have to take care of the angle between laser beam and surface. Only a spot 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.