Nice video. I like to see more about standards an calibration.
I repair measurement and calibration gear but on a whole different level. I repair calibrators manufactures do not support anymore because of age.
Like you see in the Keysight lab they often like to use old gear because of the history they have on it. Besides that, it is far from cheap to replace a calibrator or standard and then you have to build up the confidence over time from scrap.
I keep a weblog to show some of my work but I ask up front if they mind that I do that (without telling who the owner is) but many do not want that. It is a rather "closed" branch and often smal specialized labs work together. I sometimes repair gear for a distributors/dealers because otherwise they have to send it to the manufacturer in a different country. But they do not want publicity about that. I do not care, i just love repairing this sort of gear.
But I also see the not so nice side of the branch. I repaired several calibrators that were non-repairable according the manufacturer and often they were send in with already a minor problem for repair and calibration. They then "died" during calibration and tell the customer they tried to repair it but failed. 3 of those cases from 2 very big brands came in and turned out to be sabotaged. One only had a (power)connector hanging loose. A locking one and the manufacturer told the owner they had tried to repair it. I pushed in the connector and replaced the backup battery and it was fine again.
Also spicy was a company that wanted to send a "calibrator/tester" to the manufacturer but the customer was a big company with a lot of paperwork they send upfront to you that you have to sign and mail back etc and that went OK, But two weeks later the manufacturer called to tell they had tried but could not repair it and that was a lie. Why ? Because the customer made a mistake, it turned out the dead tester was never send.
The other one was the same story but a different brand. Here they switched two connectors. The real problem was a bad relais.
I repaired a meter calibrator that was calibrated by the brand and failed calibration. The funny thing was that 1 failed function was no fail but a calibration mistake (WTF) but worse a passed function was in fact a faile. A DC range had such a strange combination of faults that it looked by accident in spec if you used a very good filtered meter. I found that while I was repairing it also by accident, this was not a sabotage action. Just bad luck.
But these thing are just funny to see from my side, not for the owners and (I am sure) are exceptions, most cal-labs and manufacturers are very serious.