Optic Nerve System" of the General Electric Company's new Switchgear Development laboratory here is this "plug board' located in the facility's control building. All the circuits linking measuring devices on power equipment being tested with instruments that record its performance under short-circuit "shock" terminate in this centrally located board. Engineer in foreground operates a magnetic oscillograph, a device that records on a photographic film the electrical phenomena taking place in equipment under test

General Electric Company