You can still get analog meters on ebay for AC volts or amps. And they can easily be wired into your layout power. It's just the digital ones that seem to have vanished. The analog meters require no external power either, like most of the digital ones I have seen in the past, before they became extinct.
Harbor Freight has a small digital clamp on meter for about $14 that is good for taking readings around the layout. I think they call it a 'mini' amp meter or something like that. If you are interested in something like that I can post a link.
