a nixie tube clock ( en.wikipedia.org/wiki/Nixie_tube ) part of an old  seismic sensor. this is custom shit! made from scratch in the 70s @CNR  Milan. And yes, it’s still running.

a nixie tube clock ( en.wikipedia.org/wiki/Nixie_tube ) part of an old seismic sensor. this is custom shit! made from scratch in the 70s @CNR Milan. And yes, it’s still running.