Air Gauges: Static and Dynamic Characteristics - presents results of the researches and theoretical investigations on the air gauges performed mostly in the Division of Metrology and Measurement Systems, Poznan University of Technology, Poland: 6 governmental projects were performed successfully by the research team, with 26 patents gained. Further 5 patent applications were initiated, and 4 industrial implementations of innovative devices were made. Tens of the diploma works and two doctoral theses were prepared, with more than hundred publications. Some of the projects involved international cooperation, thanks to the series of CEEPUS programs.