This is a Loran C Navigation unit that was sold back in the 1980's. These units have recently become obsolete due to the fact that Loran C navigation signals are no longer being transmitted by the U.S. Navy. Everyone has gone to GPS. loran loran c aircraft navigation Aircraft Loran C
This is based on a publicity image published a few months before the moon landing by nasa in 1969 (as a US government institution, their works are in the public domain). The image is a bit like a sketch, but it captures the artist's imagination of this historic event. (I had to touch it up as best I could, added a few details that were missing--- I didn't do the best job, but I hope this helps some people!) apollo moon 1969 Apollo Moon Landing