If you check out eBay, Amazon, or the other kinda-shady online retailers out there, you’ll quickly find you can buy a CAT III (600V) rated multimeter for under $50. If you think about it ...

Thanks to its CAT III 600V safety rating, it can measure AC/DC voltage up to 600 volts and capacitance to 10,000 microfarad. As one might expect of a basic multimeter, it can measure DC ...