Fluke 719Pro Electric Pressure Calibrator sources; simulates; and measures mA signals and more The 719Pro includes a full functioning loop calibrator that sources; simulates and measures mA signals and more making it the ideal test tool for calibrating high accuracy transmitters; pressure switches and pressure gauges. Get the ultimate in measurement flexibility with the large backlit screen; which displays three parameters at once: Pressure measurement from internal or external sensor Sourced/simulated or measured mA values Temperature measured by optional RTD probe