with the determination of Mach number (analogue computers therefor G06G7/57)

Full Title

Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft (application of speed-measuring devices for measuring volume of fluid G01F) > by measuring differences of pressure in the fluid > using Pitot tubes > Coupling arrangements to the indicating device > with the determination of Mach number (analogue computers therefor G06G7/57)