Magnetic tape viewer

[Jake Schwartz]

Back in the 1970s, there was a liquid version of this viewer, called "Magna See" which did the same thing, and this assisted the early PPC "pioneers" decoding the HP65 and HP67 instruction sets by applying the liquid to visualize the tracks on the mag cards. This discussion thread reminds me of that 1964 Sci-fi flim "First Men in the Moon", where American astronauts landed on the moon, only to find a British flag already on the surface, having been placed there many decades before :-)

Jake