Which gauge provides information about airspeed?

The gauge that specifically provides information about airspeed is the Airspeed Indicator. This instrument measures the dynamic pressure of the air flowing over the aircraft, which is directly related to the aircraft's speed through the air. It typically displays airspeed in knots or miles per hour and is essential for pilots to maintain safe and efficient flight operations.

The other gauges serve different purposes: the Vertical Speed Indicator measures the rate of climb or descent, the Attitude Indicator indicates the aircraft's orientation relative to the horizon, and the Heading Indicator shows the aircraft's direction in relation to magnetic north. Each of these instruments plays a crucial role in flight, but none provide direct information about airspeed, making the Airspeed Indicator the clear choice for this question.