wind direction indicator

instantaneous vertical speed indicator / instantaneous vertical-speed indicator (IVSI)

landing direction indicator

vehicle position and direction indicator

atomic burst direction indicator

wind speed and direction

wind direction (W/D)

magnetic wind direction

prevailing wind direction

true wind direction

wind rode / wind-rode

wind relative bearing / wind-relative bearing

wind's eye (in the wind's eye)

air-flow indicator

artificial horizon (gyro horizon/ attitude indicator)

desiccant indicator

gyro course indicator

indicator console

indicator lamp

indicator light

indicator system

performance indicator

radiac computer-indicator

range height indicator (RHI) scope

target indicator

telltale indicator

turbine inlet temperature indicator

vertical gyro indicator

vertical scale indicator

counter indicator

gyroscope course indicator scale

zone-beat indicator

fire extinguishing system indicator disc