Stupid question: Why can't I get a reading other than max value on any trimmer?

I was adjusting a trimmer, when I noticed I couldn't make the value change. No matter how many turns I made in either direction, it always read it's maximum value. So I tried another trimmer, fresh out of the package. Same thing. Tried a different meter, same thing again.

Obviously all my trimmers can't suddenly be locked at their maximum value. Is there any logical explanation for what I might have done to prevent myself from getting a good reading? I would make a bunch of turns in one direction, then test by holding the trimmer in my hand and touching leads to pins 1 and 3. Always maximum value.
 
I was adjusting a trimmer, when I noticed I couldn't make the value change. No matter how many turns I made in either direction, it always read it's maximum value. So I tried another trimmer, fresh out of the package. Same thing. Tried a different meter, same thing again. ...... I would make a bunch of turns in one direction, then test by holding the trimmer in my hand and touching leads to pins 1 and 3. Always maximum value.
That´s NOTHING!!!!!

I bought a box of 100 fuses.

All were SHORTED!!!!!!! 😱



PS: I guess we are under attack by a bunch of Trolls.

Any other explanation is welcome, as long as it explains some latest threads. 😕