The Fluke 707 Loop Calibrator is a high performance solution for calibration, repair and maintenance of current loops. The new "Quick Click" knob making it extremely fast and easy to use. 

One handed user interface with "Quick Click" detented knob mA sourcing, simulation and measurement 0.015% accuracy and 0.001 mA resolution Simultaneous mA and % of span display Selectable step or ramp outputs 24 V Loop supply with mA measure, including 250Ω HART resistor 0-28 VDC measurement to check Loop Voltage Easy battery exchange without opening the case Compact case with separate protective holster