Perfect low tech Car meter just turned up in Oz definitely no batteries needed eBay auction: #154447371447
That would be perfect. If I come across something like that here, I'm jumping on it.
While we're talking about voltmeters, I ordered several of these plugin wall socket units back on February 18 so I could take one apart, destructively if necessary, to make sure they're safe and then have several others left to have as an at-a-glance check of the voltage present on my workbench and one or two other strategic locations:
These should've been here by now. Even with the Suez Canal getting blocked up. Even on a two person rowboat with one person paddling forward and the other backward. These should've arrived by now. May 25 is 15 days away. If they aren't here by then, I'll be filing a claim with eBay on May 26 and then ordering from somewhere else. This is ridiculous.