Calibrating a digital thermometer is a straightforward process ... Remember, using boiling water for calibration is not ideal due to variable boiling points. Instead, use the ice water method ...

But there is a solution as you can easily calibrate meat thermometers at home. The same goes for the temperature gauge on your barbeque. The implications of inaccurate thermometer readings are large.

If the thermometer reading is 15 degrees higher ... depends on your specific oven model. How To Calibrate An Electric Oven With Analog Controls Analog controls are the sign of an older oven.