what can i do in matter of voltage/curent reference with some 0,01% vishay rezistors?
Well, you can build some nice reference check device to use as a tester for multimeters/scopes etc, specially if you have access or friends who
can measure your resistors with good calibrated benchtop meter, so you will know actual value. Don't forget to record temperature as well, as
most of resistors drift by some amount with change of temperature.
The resistors that you fixed up, were they just broken at the terminations? If so, how did you fix them up? Remove the coating off the wire and crimp it in place or something?
I might need to record another video or timelapse covering that.
Most of damaged resistors have damaged edge with dozen of windings broken (open).
And epoxy paint over the resistor wire is not high-temperature, it melts when soldering, so it's all not so easy to fix.
Specially considering that wire is really thin, in range 0.02-0.05mm diameter. So I have to use binocular microscope and sharpest tip.
Worst part that wire is barely solderable, as it's likely to made from manganin
For few resistors I removed few turns, so resistance dropped (for example 40K -> 37K766 ohm), but since I will use them only as transfer points and I have enough meters to measure them accurately, I don't really care for exact value.
I fixed 3 or 4, and need to fix some more. Most still working perfectly, non-damaged, so I consider it's good score for money.
however i would feel dirty/uneasy knowing they have been harvested from some poor piece of equipment.
I don't care, 99% of my gear is bought second-hand / often broken, it's part of my hobby to repair good old gear and give it second life.
And as of Fluke resistors, i'm pretty sure they were from some hi-end gear, as little of devices use expensive big 5ppm/°C hand-made resistors