Fluke 772 Milliamp Clamp Loop MeterFluke 772 Milliamp Process Clamp Loop Meter Fluke 772 Milliamp Clamp Loop Meter measures, sources, and simulates 4 20 mA signals for testing control system I O or IPs The Fluke 772 Milliamp Clamp Loop Meter is a highly accurate and efficient tool designed for measuring low level DC mA signals in control loops without breaking the circuit. Ideal for process technicians and instrumentation professionals, it features a built in loop power supply and mA