Teardown and calibration checking of a Keithley 480 Picoammeter Dave got from ebay.
This was supposed to be a repair and troubleshooting as well, but Murphy had other ideas.
Keithley 480 User & Service Manual
Forum Topic HERE
Dave transformed his boring Youtube Silver Play Button Award into a cool retro nixie tube ...
The EEVblog Store generally ships twice a week, on Tuesdays & Fridays, Sydney time.