Dan, with the laser you can move it around the baseboard to check that everything is aligned. I have never seen a difference as I have shifted it around. Remember, it you are perpendicular to one point on a plane you are perpendicular to all points on the plane.
Originally Posted by dancqu
" ... if you are perpendicular ... " A first BIG IF in my book.
Originally Posted by L Gebhardt
I suppose it is assumed the ray is projected perpendicularly
within some degree of manufactureing tolerance; the base
of the tool, the insetting of the emitter, quality control
Using the trapezoidal method all I need are a square, ruler,
and hand tools. The proof of good alignment is a square all
corners image, sharp across the entirety of it's plane. Dan