Hi, I’m using alligator clips and wire to act as probes. After switching my meter to measure just ohms (no longer auto-ranging), and touching the two wires together, it gives a stable reading of .5 ohms (or .4 ohms or even .1 ohms). But, then as I slide one of the wires along the other exposed wire end. The numbers reported become insane... anywhere between 100-something ohms to .1 ohms, and the numbers rise and fall haphazardly. What is going on?
The wire ends were just stripped... and the exposed golden wire is nice and straight.
It thankfully was the battery; now touching the wires together gives resistance reading of 0.1 ohm... and moving the wires across the area where they are touching gives temporary readings of like 26 ohms, but then it quickly returns to 0.1 or 0.2 ohms.
I've seen this too. At the low ohms setting, there's a fair amount of test current that has to run from the battery. Also, since its picking up readings under an ohm, small variations in the leads and the contacts can make it jump around. Its all more stable if you can measure with a higher range if possible, but you lose decimal places with small values at higher ranges.