ABSTRACT
This chapter presents known configurations in experimental aerodynamics, with specific interest to their implementation and characteristics. Pressure can be measured with respect to a vast range of "standard units", a fact that, at first, might seem confusing and terribly redundant. Two main categories in the available standards panorama can be found: manometric units and Imperial ones. The pressure determined by a solid in contact with a surface is relatively less interesting in static pressure measurement devices, since fluids are mostly used in conventional ones. Devices for direct pressure measurements are transducers that directly read pressure either from a force acting on a known area or from the displacement of a column/layer of fluid due to gravity. The measuring principle of manometers and barometers is based on the displacement of a column/layer of fluid of known density. McLeod gauge employs a known reference gas entrapped in a small volume, to determine the unknown pressure.
