Linked from
The 20 pages that link to Thermometer, each with the reason it gives.
TemperatureRelated: Thermometers infer temperature from properties that vary predictably with it.
FeverRelated: Clinical thermometers provide the measurements used to identify and monitor fever.
Vital signsRelated: Clinical thermometers estimate body temperature at different sites.
FahrenheitRelated: A Fahrenheit reading depends on calibrating an instrument to that scale.
SteakRelated: An instant-read thermometer checks a steak’s interior more reliably than timing alone.