Vintage Hickok tube tester - photo

[schuylergrace]

That brings back some memories! I could even smell the inside of that case when I saw it. The one I used also had a long cord with a bunch of adapters for testing CRTs/picture tubes. And in my freshman Intro to Electrical Engineering class, I was the only one who knew about mhos, thanks to a suitcase full of meters and switches and sockets and lamps.