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Adafruit Pocket Autoranging Digital Multimeter
When we're on the go, we like to keep a multimeter in our purse and this model is by far the best pocket meter we've found. It's so good you'll end up using it as your main multimeter!
First up, this meter can measure nearly everything: it's got DC and AC voltage, resistance, diode, and beeping continuity test, capacitance, and frequency.
And that's not all! It's also auto-ranging, has a data-hold button and turns itself off automatically after about 15 minutes to preserve the battery life. There's a PTC auto-resetting fuse inside for the current sensing side, so you never have to replace it.
Our favorite part is the nice hard-shell case which will protect the meter and will remind you to turn it off (it won't close properly if the switch isn't in the off position) and a smart cord-wrapping area to keep the leads from unwrapping and poking holes in stuff. Runs on two AA batteries that are included! This is a really nice pocket multimeter!