The Hioki 3504-50 Clamp Meter is the industry’s first clamp meter to measure up to 1000 A AC/DC with a clamp diameter of just 1.2 inches. This makes it ideal for measuring current in tight spaces, such as in electrical panels or behind appliances. The 3504-50 also features a built-in flashlight for illuminating dimly lit areas, and a large, easy-to-read display.