[Eliot Ness]

Jake, I'm kind of spoiled because for about 40 years I carried a Fluke meter.  Our meters had to be sent in for calibration once a year but I'd measure a known source before and after and they never drifted.  I've got about 3 Flukes laying about, but one is a military issued 27FM that is built like a tank and came with a high voltage probe.

For a hobbyist a full blown Fluke might be overkill and they are rather expensive.  The Harbor Freight meter Mike linked to would probably serve you just fine, but depending on your budget there is a more affordable Fluke available, the model 15B:

https://www.youtube.com/watch?v=5XltjGUyjrc

You can pick a new one up on eBay for about $80 shipped.  These are made and sold in China unlike the U.S. made Flukes, hence the lower price.  If you go to Harbor Freight just don't buy one of their $5 meters.  Those are OK for carrying around in your car but the test leads are very cheap as is the meter.