[time-nuts] Some pics of the Datron 491x DC reference cell

[Dr. Frank Stellmach]

Bruce,

good hint, I think you are right..

Then it's a custom specific R array, metal foil technolgy (S105 or 
similar) from Vishay, perhaps oil filled.

Makes it very difficult to read the circuitry and design a replacement 
with discrete resistors.

Frank