Hello everyone, I recently acquired a very old and dirty Cimron 6200A Voltmeterwith a nixie display. I cannot seem to find any information about this unit online. Anything would be helpful (year, specs, manual link, schemes, ext..) Thanks!

 

Nice meter!
I found this manual for the Cimron 6000 -- not the 6200. The picture shows a schematic that seems to have Nixie tubes. It might be better than nothing...
http://www.ebay.com/itm/CIMRON-MANU...r-Instruction-w-schematic-18798-/300990059648

p.s. Your the meter is a little past the calibration date.