Where was it, what kind of company, useage?
I would think it is from the PTB
Where: PTB is rigth
But sorry, no idea about the history ... I'm in the acceleration dep. ...
Otto Wolff
With your nick?
Probably yes, I check it next friday
The small motor stirrs the coolant
... which is possibly some polychlorinated biphenyl
It's marked to use native naphtha and water
Why was it retired? What did they replace it with?
No idea
Maybe they changed the connector system ?
Just a nice big stone of old metrology, I don't know about the internal contstruction, but if it can take the dI/dt , you can measure the current of a thunderbold
Well, (23kA)² x 10µ\$\Omega\$ = 5.29kW ...