On Sun, 16 Jul 2017 16:34:56 -0700, tabbypurr wrote:

voltmeters don't output anything. They should be fine measuring solid
state.

DMMs and VOMs give different readings in certain circumstances (see
Ralph's post). In GB (at least) for a long time the service manuals for
decent gear would provide expected voltage readings for 20k OpV analogue
meters, the AV0 model 8 specifically IIRC, which saved the technician the
extra bother of scratching his head when checking hi-z parts of a circuit.