Not excatly an electrical question. However, I recently got a hold of 3 old tube testers. 2 are in wooden boxes with covers and one is in in a metal box with no cover. Does anyone know anything about these? They have a scroll built into them with all the different tubes listed and what to set the switches at to test them. I can get make and model if that would be helpful.
I thought they were rather interesting pcs.
