Greenlee DM-500-C with NIST calibration certificate. Professional digital multimeter uses relative offset display mode to see relative changes in measurements. This digital multimeter records max, min, max-min and average readings and data hold. Greenlee DM-500-C Professional digital multimeter characteristics include Auto ranging for convenient operation and to save you time. Record max, min, max-min and average readings and data hold. Relative offset display mode to see relative changes in measurements. Frequency, temperature and capacitance measurements plus diode and continuity tests standard. Auto power off and low battery indicator. Accessories included: (1) 9 V battery, test leads, bead temperature probe.