This was my sense as well. The device looks and is described like something I would not be surprised to find on a 1970s warship or spy plane to aid navigation.

This was my sense as well. The device looks and is described like something I would not be surprised to find on a 1970s warship or spy plane to aid navigation. Not with street maps, specifically, of course, but something similar! Still impressive to get it into a consumer-sized (and almost consumer-priced) box.