Lazer mill head alignment.

[big o]

Pencil lazer clamped to mill head, small angle plate screwed to mill base. Pencil lazer has a
plastic cap (magic marker cap) #51 drilled in cap (to narrow lazer beam) and #51 hole drilled
in angle plate. Align beam with hole in plate. Cap is lopsided, hole is off center.

 

[pontiac428]

That's using your noodle. You can still do fine alignment with a DTI, but I bet this is good within .010 if your eyes are good.