Grason-Stadler Founders


In 1949, Rufus Grason and Steven Stadler cofounded Grason-Stadler (GSI). In the early days, the products were instruments for behavioral research. These instruments were used by university psychology departments, the pharmaceutical industry for drug research, and by NASA Project Mercury for training Ham and Able, the first space chimps. Since the release of its first commercially available audiometer in 1952, GSI has been manufacturing electronic medical instruments which are used for research and clinical measurement in the field of hearing.