Extech's 308926 Clamp meter + Digital Multimeter can measure to 2000A through the clamp and also measure to 400mA through the test leads. With Capacitance, Diode and Duty Cycle measurements, tjis meter provides the user with a full featured multimeter combined with high amperage current clamp. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.