I am in the market for a used laser, have a couple to look at, and need some guidance on how to best tell if they are working up to specs. The two I am looking at have not been used in a while and neither have a computer hooked up. I have a laptop I can take for the inspections if I knew what to have pre loaded. I think I need to know if the tubes are operating close to their rating, and if the alignment is good in all 4 corners. Just don't know how to best accomplish this.
Any ideas?