As I am going through my late parents’ stuff I am discovering interesting things, most of which I have been able positively identify. But there were a few that took a bit to figure out. That gave me the idea for a new thread - “What is this?”, figuring that the mental cornucopia that is Mudspike, can identify just about anything.
So to kick things off, what is this?
I think it has something to do with de-magnitizing a CRT/old style color TV tube…Dad was an EE so something he might have had.