I'm not in the league with you Kickok guys. My brother gave me an EICO 625 emission tube tester as a gift. He had too many of them.
I cleaned it up. Replaced the lamps that were burned. Fitted a new window for the scrolling list, fitted a new power cord and carrying handle and checked out all the innards vs. the schematic.
Before and after pictures:
I have a Stark 9-66 that I recently picked up, which is basically a Hickok. This is my first tester, easy to use and very helpful.