A pitot tube is a precision instrument used to measure fluid flow velocity, primarily in applications involving air and gas. It consists of a tube pointing directly into the fluid flow, capturing the impact pressure (total pressure) and comparing it to the static pressure. This differential pressure measurement is then used to calculate the fluid flow speed. Commonly utilized in aerodynamics, HVAC systems, and industrial processes, pitot tubes are valued for their accuracy, simplicity, and durability. They play a crucial role in optimizing performance and ensuring the efficient operation of various systems by providing reliable velocity data.