Where rugged meets reliable. The Fluke 365 is a new, innovative Fluke clamp meter, offering a thin, small jaw design that makes it easy to get around tightly packed wires. Be ready for anything. The Fluke 365 is a rugged meter perfect for jobs where access to wires is difficult. The 365âs thin, small jaw is detachable with a flexible lead, which makes gaining access to wires and viewing the display easier than ever.