Brass shaft loose in brass bushing.
In this case it's an Avometer, where the brass shafts of both the rotary selector knobs have become loose in their brass bushes- to avoid contamination (and possible damage) i am contemplating building up the shafts by some means rather than trying to work on the bushes (which are embedded into the meter, and probably made of a hard brass that is notoriously difficult to drill or ream.
Electrical continuity is required twixt the shaft and bush.
How would you approach this...? I cannot simply replace the knob/shaft assy. as it appears the majority of the wear is in the bush.
Thanks.
Dave
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