If you buy something using links in our stories, we may earn a commission. Learn more. A good multimeter is like the Swiss Army knife of electronics tinkerers. It's so useful you'll rarely put it away ...

Extech Instruments has introduced the MA620 (AC) and MA640 (AC/DC) 600 A true RMS clamp meters. The affordable new clamp meters are compact and easy to hold while offering an ample 1.5" (40 mm) jaw ...

We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › From testing batteries to determining the amount of voltage in an electrical circuit, ...