On 06/27/2019 10:30 AM, Mark J. Blair via cctalk wrote:
I don't recall seeing one of those in either of
the computer rooms I worked in as a student back in the late 1980s. I would love to get my
hands on one (or make one?) now.
One brand of a liquid you put on the tape is MagnaSee.
If you google "magnetic tape viewer" they have pictures of
what I think the earlier poster described.
Jon