- 1). First locate the calibration control for the thermometer. Usually this is either a thumbscrew or nut somewhere along the side or back of the thermometer. When you turn it either the needle or dial behind it should move slightly.
- 2). Next you need to prepare a situation where you have known temperature to which you can calibrate your dial thermometer. An ice water bath is the easiest and safest possible way to do this.
- 3). Take a medium-size container and fill it half of the way up with ice. Now pour cold water over the ice to fill the container the rest of the way. Wait 10-15 minutes for the temperature to stabilize. There should be still both water and ice in the container.
- 4). To calibrate a dial thermometer placed it in the ice bath and weight for the needle to settle on a temperature. If this temperature is 0°C / 32°F then the thermometer is correct. If it is not reading this temperature use the calibration control to correct it.
SHARE
