Oven thermometers are used to measure the temperature of an oven. A precision oven thermometer is essential, not only to bake and cook food consistently and evenly, but also to cook meat at the right temperature. To avoid health risks, such as parasites, the meat should be cooked at not less than 325 degrees at an internal temperature recommended by FDA safety standards. A properly calibrated oven thermometer helps ensure that the food is cooked at safe temperatures.
- Check the accuracy of your oven thermometer by placing the thermometer in the center of the oven rack. Set the oven to 325 degrees and let it heat up. Once the oven has been preheated, open the door and check the thermometer reading. After another five minutes, recheck the thermometer.
- If the thermometer reading is off, turn off the oven and allow the thermometer to cool inside.
- Once the thermometer has cooled, if it is water-resistant, boil it. The thermometer should record the boiling point as 212 degrees. Repeat step 1 to measure the accuracy of the thermometer.
- If the thermometer is still not accurate, fill a bucket with crushed ice—the addition of clean water to the top of the ice and stir. Place the thermometer 2 inches down on the ice. The thermometer should give a measurement of 32 degrees. If not, use a pair of needle-nose pliers to adjust the screw on the bottom of the face of the dial until the temperature reads 32 degrees.