Dual shaft knobs for HP P/S
 

Anyone know where I can find a pair of knobs (4 pieces) for the dual
shaft voltage and current adjustments on my HP 6286A? The unit is out of
production and it doesn't appear that HP/Agilent carry this part anymore.
If I can't find a stock set of knobs, a non-HP substitute would suffice.



Ed K7AAT