Tube of the Month : The B6091 Nixie

This time tube of the mont is something completely different. Thomas Mayer for a change don’t reveal any amplifier or rectifier tube, The Burroughs B6091 – Nixie tube.
Nixie tubes are cold cathode tubes for displaying information and usually used to display numerals from 0 to 9, yet some can also show letters or electronic symbols.
These are cold cathode tube in absence of a heater operating by a glow discharge with one common anode in the tube to which a positive voltage is applied. 

Link: here.