Which of the following is not used to measure pressure?

The thermometer is not used to measure pressure; instead, it is specifically designed to measure temperature. In the context of weather and aviation, understanding different types of measurement instruments is crucial.

Barometers measure atmospheric pressure and are commonly used in meteorology to predict weather changes. Manometers are devices that measure the pressure of gases or liquids, often used in scientific and industrial settings. Altimeters specifically measure altitude based on the ambient air pressure, providing valuable information for aviation.

In summary, a thermometer serves a different purpose by providing readings of temperature, distinguishing it as the instrument that does not measure pressure.