Fluke 323 True RMS Clamp Meter 1. Rugged, reliable basic True-RMS clamp meter for measuring current up to 400 A 2. Measures AC current to 400 A 3. Measures AC voltage and DC voltage to 600 V 4. Provides True RMS AC voltage and current for accurate measurements on non-linear signals 5. Measures resistance to 4 kΩ with continuity detection ,