Extech PRC20 Thermocouple Calibrator/Meter features a palm-sized double molded housing and large dot-matrix backlit LCD and uses a high accuracy calibration function to simulate precision thermocouple outputs for use in calibrating thermometers, transmitters, controllers or recorders. Extech PRC20 also includes display output in terms of millivolts or temperature, a standard mini-thermocouple input, and up to five user adjustable calibration presets.