Numitron Tube Clock:
Numitron Tube Clock: IV-16
Like the high voltage Nixie tubes, I also have a love affair with low voltage incandescent display tubes, or Numitron tubes. These types of tubes were also used as numeric displays back in the 60s through the 80s, and now are available in surplus. I designed and fabricated a number of clock designs from 2010 to the present, and continue to refine clock designs based on various tube types.
One such clock is based on the small but popular IV-16: