Karl F. Anderson is an electrical engineering and business administration graduate of Kansas State University. He was responsible for flight research instrumentation systems and all ground research and test facilities engineering at the NASA Dryden Flight Research Center during his civil service career from 1964 to 1995. Inventor of the Anderson loop, NASA's patented measurement circuit topology developed to improve on the Wheatstone bridge, Mr. Anderson is the author or editor of numerous NASA technical publications, conference papers, magazine articles and user's manuals involving Anderson loop circuits. After his retirement from NASA, Mr. Anderson founded Valid Measurements to spread this new technology.