The Klein Tools CL360 TRMS Open Jaw Fork Meter, 200A AC is an automatically ranging true root mean squared (TRMS) digital, open jaw fork meter that measures AC current via the fork, AC/DC voltage, continuity, and resistance via test leads. It can also detect the presence of voltage using its integrated non-contact voltage (NCV) tester. The wide jaw allows for current measurements in wires and cables up to 3/0.