While browsing around I came across a page full of old popular science magazines from way back in time,
http://blog.modernmechanix.com/publi...PopularScience
the covers are so interesting! a few clicks later I found myself staring at this CO2 lasercutter and all the ancient mounting techniques..
I noticed in the smaller picture inserted that the beam seems to be off center from its optic..
from 1963 ( Can anyone else find an error? ):