I found this ad for a six-degree-of-freedom 3D input device in the Summer 1989 issue of the SGI magazine "IRIS Universe". I remember seeing stuff like this around in the 90s, but it all seemed so inaccessible at the time. Flipping through these old professional magazines, you spot some interesting engineering and industrial design. @flexion@oldbytes.space, you should get one of these, restore it, and get it working on one of your systems. #SGI #UNIX