Thermometers can be used to record temperatures from the mouth, armpit, rectum or ear.

Thermometers can be purchased from any local supermarket, chemist or St John's online store.

Generally, an ear temperature is 0.3°C to 0.6°C higher than an oral temperature.

A thermometer should have both Celsius and Fahrenheit scale. A low-grade fever is often classified as a temperature that is above 37° C

Clean your thermometer before and after you use it with either rubbing alcohol or lukewarm soapy water, then rinse with cool water. Wipe it dry with a clean cloth or let it air dry.

Yes, a baby thermometer can be used on adults, teenagers and even the elderly.

Yes, infrared thermometers can be used to take body temperatures.

A thermometer should be left under the armpit for about a minute, or until the device beeps.

When using an oral thermometer, the device should be placed under the tongue and held in the same spot for about 40 seconds.

There are several ways to check body temperature with a thermometer. If you're using an oral thermometer, clean the tip with cold water and soap, turn the device on, put the tip under your tongue, towards the back of your mouth, close your lips around the device and leave for about 30 seconds. Once device beeps or flashes, check the temperature on display.