Why is it important to regularly calibrate thermometers?

Regularly calibrating thermometers is essential because it ensures that they provide accurate temperature readings. Accurate temperature measurements are crucial in food handling and preparation, as they help prevent foodborne illnesses by ensuring that foods are cooked, stored, and held at safe temperatures. Over time, thermometers can drift from their original calibration due to factors such as temperature extremes or natural wear and tear. By calibrating them regularly, food handlers can verify that their thermometers are giving precise readings, thereby maintaining food safety standards and helping to protect public health.

Options focusing on aesthetics, readability, or preventing damage to food containers do not contribute directly to the thermometer's primary function of ensuring food safety through accurate temperature measurements.