Electronics > Metrology

ESI SR 1050 100K transfer standard, some inside pictures.

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lowimpedance:
Thought the following pictures of the inside of an earlier manufactured SR 1050 might be of interest after looking at this thread ;
https://www.eevblog.com/forum/metrology/esi-resitance-standard-sr1010-and-standard-resistor-sr104/
and seeing some pics of an ESI with bobbin style resistors and what IET have done!.

and yes I was veerrrry careful not to touch anything ! as much as all that sparkly gold invites one too  :D.

lowimpedance:
a few pore pics.

lowimpedance:
and lastly some catalogue info. from ESI Metrology catalogue number 7 1974.

daqq:
Nice! Thanks!

zlymex:
Thanks very much for the inside photos.
I don't like the way that esi trim those mica resistors at all especially the resistance is very high.

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