[Amps] Grounding Vacuum cap shafts

[no9z at soltec.net (Lynn)]

  What is proper way to handle the tuning screw(shaft) on vacuum
capacitor?

   I have seen amps that use hv insulators between the vac cap and
the turns counter and I have seen amps that just use the ground
provided by vac cap itself and the turns counter.

   Is the non insulated shaft a serious safety threat to the operator?

thks in advance for
any comments.

Lynn   NO9Z