Sweet jumping crom.
Heh. That was the state of the art. Funny thing is that, at the time, it looked state of the art.
As a CAD user for over half my life, I am so glad that I don’t have to use a tablet to do drafting. Converting the physical model to a wireframe using the tablet would probably be the only way to make this work at the time. I love that we now can do so much more thanks to these pioneers.