What Once Took Two People; Now Takes One Now one technician can do jobs that would otherwise require two people. Clamp the Fluke 381 around a conductor; remove the display and walk across the room to operate controls or remove protective equipment; all while watching real-time readings. The iFlex® Flexible Current Probe (included) expands the measurement range to 2500 A AC while providing increased display flexibility. With a cord that runs 6 feet; you can finally measure those tight spaces; awkward sized conductors and disorganized wires.