You jest, but your comment made me think of what an impressive Enigma machine [1] such an arrangement of rotors could make. The tubes are slipping in contact, s

You jest, but your comment made me think of what an impressive Enigma machine [1] such an arrangement of rotors could make. The tubes are slipping in contact, so it'd have to be electrical linkage rather than mechanical to conduct the flow of the data. [1] http://en.wikipedia.org/wiki/Enigma_machine http://en.wikipedia.org/wiki/Enigma_machine