JOFRA PROCESS SIGNAL CALIBRATORS JOFRA ASC300 MULTI SIGNAL CALIBRATOR  - - NEW - - Substantial enough to cover all your needs for a process signal calibrator with superior accuracy and compact enough to fit into your tool box and operate with one hand for easy field calibration. JOFRA mAcal - MILLIAMPERE LOOP CALIBRATOR Designed for easy and practical test and control measurement. Generates and measures the current in the loop on 2-wire transmitters including 24 VDC loop supply. Autostep, Ramping, % readout. MLC - MULTI LOOP CALIBRATOR The JOFRA MLC offers a wide choice of measuring, simulation, and calibration combinations including autostepping, ramping, transmitter calibration, scaling, selectable standards, cold junction compensation, loop testing, and more.