When I first started my Instrument Rating the ROTC detachment had a tabletop FRASCA with a pen-based plotter. You had to initiate the device and manually align the plotter on the paper.
It wasn’t quite as old and heavy as this Model 102, but the basic concept.
During this time period, Bruce Artwick had already released Flight Simulator 2 so doing the same thing inside a much smaller and easier-to-use Commodore or Apple II was mind-blowing.