The Fluke 707 Loop Calibrator is a high performance solution for
calibration, repair and maintenance of current loops. Use it to
temporarily replace the power source in a current loop. With the
calibrator in control of the current, you can accurately set the
current between 4 and 20 mA. This allows you to control the loop and
the devices connected to it — which means you can control and calibrate
actuators and indicators in that loop
Click your way to the
precise milliamp value you want with Fluke 707's "Quick Click" knob
interface making it extremely fast and easy to use. Each click changes
the value by 0.001 mA. Press and click to change it in increments of
0.100 mA. The large digital display shows you. The click lets you feel
it.