I made a test run tonight. It come up to temp in about 15 minutes settled in with a .2 swing. Now the bad news the thermostat on the Incukit minni is set at 99.5 and it stays between 98.8 - 99.7 which is ok but my second thermometer a Incutherm Plus says 101.1-101.3 so one thermometer is off so I grabbed the wife's medical thermometer and it agrees with the Incutherm plus. The good news is I can't find hot or cold spots. That stated my question is does anyone know how to calibrate Incukit minni thermometer.