It's an airspeed indicator that compensates for outside temperature and barometric pressure at altitude.
An airspeed indicator is an aviation instrument which displays an aircraft's current airspeed.
some V speeds are not indicated, It doesn't show true airspeed or ground speed.
The airspeed indicator or airspeed gauge is an instrument used in an aircraft to display the airspeed in knots
the airspeed indicator works by measuring the increase in air pressure caused by the moving aircraft
the airspeed indicator works by measuring the increase in air pressure caused by the moving aircraft
Alexander Ogilvie from England
Airspeed Indicator.
Airspeed indicator, alitimeter, and vertical speed indicator.
airspeed indicator
Airspeed indicator
Airspeed indicator.
Equivalent airspeed is speed at sea level in which the incompressible dynamic pressure can be produces as if it were at true airspeed. Equivalent airspeed is used to predict aircraft handling.