[R-390] R-390A meter substitutes, repair, or sales.

[Chris Kepus]

I am rebuilding a R-390A and am in the process of gathering parts while my
back recovers from lumbar fusions and other restorative surgical procedures.
I have another 90 days before I'll be maneuvering this R-390A onto a repair
bench.  

 

This R-390A is missing it's meters so I am looking for either the real deals
or suitable substitutes.  If anyone has spare working meters that they would
like to convert to wampum, please contact me directly.  

 

Given the relatively scarcity of these rascals, I have found at least one
candidate for  a substitute meter. It has the same dimensions as the
original meters and when flipped over, it appears to have the same circular
"nut" with four equally spaced square notches and the "nut" is recessed into
the Bakelite surrounding the circular meter case.  

 

I have never attempted to take one of these meters apart so would someone
who has performed meter surgery please enlighten me if it possible to open
these meters up.  The circular "nut" may not be a nut at all.. But if it is,
it looks like it requires a unique spanner wrench.or ? 

 

Thanks in advance for any and all input, suggestions, sad tales of meter
destruction, or success stories.

 

73 / Chris / W7JPG