Voltcraft tc 150 thermometer calibrator voltcraft tc 150 the voltcraft tc 150 temperature calibrator calibrates contact thermometers with external submersion or injection temperature sensors the calibration body is an electrically controlled heating element with 6 integrated bores 5 in the front 1 at the top of the housing the bores have different diameters for different sensor diameters the temperature is set in deg celsius using the front panel controls dual 7 segment displays show