What instrument is used to measure temperature?

• A. Thermometer
• B. Stethoscope
• C. Pulse Oximeter
• D. Sphygmomanometer

Answer: (A)

Measuring temperature requires a device designed to detect heat or temperature changes. A thermometer is specifically built to measure how hot or cold something is, whether it’s a person’s body temperature or ambient conditions. In medical settings, it can be used orally, under the tongue, in the armpit, or rectally, and many modern thermometers provide a quick digital reading. The other instruments have different purposes: a stethoscope is used to listen to heart and lung sounds, a pulse oximeter checks blood oxygen saturation and heart rate, and a sphygmomanometer measures blood pressure.