This product is used in conjunction with the basic aerodynamics experimental platform and multi tube pressure gauge to study the application of basic concepts of Bernoulli equation in aerodynamics. The device consists of a Venturi model and an adjustable pitot tube. The pitot tube can move along the center position of the flow channel in the model to measure the pressure distribution along the way at different wind speeds. The pressure is read by a multi tube pressure gauge. This product is mainly used to analyze the pressure variation law of air flowing along the Venturi channel model, scientifically understand and intuitively verify the Bernoulli equation, and learn the usage method of the Pitot tube. Combined with geometric parameters, it can calculate wind speed and air volume.