[header] How to take a temperature [title] Use a multi-use or oral digital thermometer. [step] Some digital thermometers are designed to be used either rectally, orally or in the armpit, while others are designed to be used specifically in the mouth. Either type of thermometer will give an accurate reading. 
You can find digital thermometers in the drugstore. [substeps] If you have an old glass thermometer, dispose of it instead of using it to take a temperature.