I used it to show a relative newcomer to electronics, making extensive fun of the ubiquitility...ness yet uselessness of those things. I always stress that you shouldn't use it to test for mains but give acceptable screwdrivers. Also, extra points for a voltage tester labeled by the Wau Holland Foundation...
Shortly before midnight.
Im aksing myself if you are aware of the fact that neons have a voltage tolerance of a few Volts, not millivolts ...
Yes, of course. Still, I was able to prove my point, varying the supply about a dozen volt gave just a few hundred mV variation on the "oh-so-professional DMM."
You have also a sigificant overvoltage before the lamp discharge
I know. And the light dependency. And possible radioactive start-boosting agents.
And I like the ways things have been done in the past.