The Magnetic Tape Viewer - see the sound on a tape - YouTube
Seeing tracks: viewing magnetic information as an aid for tape digitisation | greatbear audio and video digitising
Visualizing Magnetic Signals On Tape | Tapeheads.net
Andy AVAV Systems on Twitter: "Todays #RetroHiFi - Magnetic Tape Viewer - You can see the magnetic pattern on the tape, helps ID Full,Half,Quarter Track, Timecode etc https://t.co/XwKcg6y8mw" / Twitter
Andy AVAV Systems on Twitter: "Todays #RetroHiFi - Magnetic Tape Viewer - You can see the magnetic pattern on the tape, helps ID Full,Half,Quarter Track, Timecode etc https://t.co/XwKcg6y8mw" / Twitter
Magnetic Viewer by Arnold Magnetic Technologies
Magnetic tape viewer box | 102732326 | Computer History Museum