[Chas]

If the fingers/hands are used to hold the bare ends of both the battery and speaker coil, (field or the primary of the output transformer) wires there is a possibility doing the "click" test, that, a good coil can induce a high voltage pulse and give an electric shock. As unpleasant as that is, the shock, in of itself, indicates the coil under test is good.

Many Digital Volt Meters having the ohms function, have a problem giving correct resistance values of an inductor like an output transformer or a field coil. It is best to use an analog ohmmeter for these large inductor resistance measurements.