It looks like a normal Geiger-counter as it has a high-voltage selector which is probably connected to the "blue" contact at the back, the black tube socket contact is probably just start/stop and reset inputs and possibly also the rest of the front switches like manual/test and set.
/Martin -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/3bb7dc82-7e43-4347-908c-224b5a41472e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
