i autmatically say "WoW" on the fifth images and above

@tig said:

I worked on a similar 'Calcomp IGS 500' setup at the very same time - it was in the UK [it was the 1st CAD installation in England!]...
By the late 80s I was working on 'Silicon Graphics Indigos' using 'Sonata' [the grandpa of Revit]...

The digitizers were Calcomp, but the equipment was manufactured by a California company, which was purchased by GE around 1979.

👍
keep up the good work bro.. 😉

Pilou, thanks for the feedback.
Mike L, thanks for reposting.

Nothing other than my cursor changes to a gray arrow instead of black and the program stop responding to any mouse or keyboard action, until I hit esc.

Task manager claims sketchup is responding the whole time.

After I hit esc. the program comes back to life.

Some cool stuff.