The 9081 Five-Axis Aligner makes aligning a laser beam through a tube simple. Turning both X screws or both Y screws equal amounts in opposite directions gives you tilt or pivot about the center of the plate. Turning them in the same direction gives you pure translation. Z adjustment allows precise translation along the optic axis. It includes a removable mounting platform. The 9081 has (7) 1/4-20 tapped holes and (2) 8-32 tapped holes.  Patent Number 5,303,035