Bit of progress of target device, why FX reference actually created... Conversion of 792A Power Pack into 10VDC battery-powered reference.
Main aluminum frame of 792A transfer box and power pack is actually exactly the same, only front face plate is different and guard inner shield does not have holes for shaft and terminals.
So off we go, drill missing holes for binding posts.
I need 4 posts, because FX output is 4-wire, force and sense wires are separate, so I can use it to drive resistive loads (to act as current source).
Looks somewhat decent, eh? I'll have to drill now holes in guard plate, and likely to lift PCB a bit further from shield, to avoid interference of binding posts and PCB.
Need to find out way to make white text marking on black background to add labels.
LEMO power supply output port still works as original design, providing regulated isolated +11/-11, in case I need connection to real 792A transfer unit.