The Puhlmann Nixie. Or as I like to call it, Dr. Zarkov's Timing Countdown Thingamabob. You install its 12.7 x 6.2- inch brushed-steel frame on your kitchen wall and you will be able to time your roast or wait for Flash Gordon to save the Earth. All thanks to its always fascinating nixie tubes, as you can see in the demo video.
I bought a nixie clock that had its directions translated (badly) from German. I was baffled, my two E.E. friends were baffled. I think it's sitting in a closet now.
Perhaps if we were to run it through an Engima machine, the instructions would be clearer.