Search your local pawn shops for a fluke with a frequency counting function(Hz) and make sure the leads don't cut out when you jiggle them at the meter.
And check the battery compartment.
I have seen dozen of flukes in pawn shops that look brand new.
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 ...
www.adafruit.com
Reads Capacitance and Hz, which you definitely may want once in a while. It looks a bit Iike a cheap toy, but mine’s been ticking along for several years now
I use a Fluke at work. Think it’s probably way overkill for pedal stuff, and I wouldn’t buy one with my own money, but if you find a cheap one in good shape…why not