Completed Project Voltmeter needle goes only half way on Heathkit IM-5228 VTVM

ebp said:

Can you tell what kind of pots they are? Carbon composition pots, even now, have broad tolerance for the end-to-end resistance. ±20% to ±30% is not out of the question. Wirewound are usually better. Typically you can feel a bit of roughness when you turn a wirewound.

I'll leave it to you to verify, but it appears to me that the pots may be shunted by other resistances, depending on the function switch setting (I always do best with that sort of thing if I have a paper copy of the schematic and get out my crayons).

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