What instruments measure wind at an airfield?

• A. Thermometer and Hygrometer
• B. Anemometer and wind vane
• C. Ceilometer and Barometer
• D. PAPI and MALSR

Answer: (B)

Wind is described by speed and direction, so the instruments that provide these at an airfield are the one that measure how fast the air is moving and which way it is coming from. The anemometer gives wind speed, often using cups or a small propeller, while the wind vane shows the wind direction. Together, they supply the wind data pilots rely on for takeoff, landing, and runway selection, and these readings appear in weather observations like METARs.

The other options don’t measure wind: a thermometer and hygrometer track temperature and humidity; a ceilometer and barometer measure cloud ceiling and atmospheric pressure; and PAPI and MALSR are lighting/visual guidance systems for approaches, not wind measurement tools.