Fluke-789-Process-Meter-FLUKE-FLUKE-789-The-Fluke-787-was-the-first-tool-to-combine-a-digital-multimeter-&-a-loop-calibrator-to-give-process-technicians-double-the-power-in-one-tool-Now-it-39-s-even-better-with-the-new-Fluke-789-the-ultimate-loop-calibration-multimeter-The-789-has-a-24V-loop-supply-reducing-the-need-for-taking-a-separate-power-supply-when-doing-offline-transmitter-testing-&-with-its-built-in-selectable-250-Omega-Hart-resistor-it-also-eliminates-the-need-to-carry-