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