Seeking Feedback - How often have you used a Low Resistance Micro-Ohmmeter?

Curious: could you give an example of how you use it, if it's not classified or anything like that.

I used one when I had access to one - to find shorts.

I don't know what one is, but now I want to know.

rscasny  Younger me used to use them to measure contact resistance on high voltage switchgear (aka circuit breakers) and transfer switches.  Older me uses it to measure rotor and stator winding resistance in motors and generators.  Anything with single or fractional digit resistance can't really be measured accurately with the Fluke.

never because I do not have any, but sometime I would like to have one for testing current sensing resistors and evaluating resistance of wires.

High power relay contacts evaluation.

I can imagine them being extremely handy for measuring electrical contacts, such as relays to examine if they are failing, or for checking the resistance quality of shielding or grounding between different parts of a system or enclosure perhaps!

I don't have a micro-ohmmeter, but do have a couple of milli-ohmmeters (one commercial one, and one that was a DIY project  Building Frank's Milliohm Meter   that is pretty accurate (and that one has the characteristic that it doesn't pass high current through the device under test [for some applications that's a very useful property, although other applications may not require that]); it can even be used to measure MOSFET on resistance.

That's correct for shielding, I specifically mentioned just checking "resistance quality" (i.e. a maintenance operation) some may miss that! : )

I've used bridge circuits to measure hot film and nano wire probes.  At Bosch we used them to measure relay contact resistance.

I've wondered if one could be used to monitor the condition of copper AFILS loop tapes. One of the problems I often see is water ingress rapidly corroding them due to the close proximity to concrete. (Another is damage from carpet fitters knives during carpet repairs.) However they are often laid under expensive floor coverings which makes routine inspection difficult and expensive. Being able to monitor the condition routinely would allow for scheduling a repair before it failed completely.