01	Biomedical Instrumentation and Bioengineering	Bioinstrumentation and equipment to monitor man in the operation of man machine systems; Biotelemetry including biotelemetry transducer and transmitter equipment; Use of body potentials as intrinsic power supplies. Includes equipment for monitoring and processing biomedical information from closed cycle ecological systems. For nonbiomedical telemetry, See 25/01, Telemetry. See also, 23/05, Life Support Systems, 06/12, Medical Facilities, Equipment and Supplies, and 23/02, Human Factors Engineering and Man Machine Systems.
02	Human Factors Engineering and Man Machine Systems	Application of human factors to the design of equipment; Habitability of work and living space; Ergonomics; Interaction of man and equipment in terms of subsystem and system performance requirements and evaluation.
03	Bionics	Study of biological processes in order to develop engineering systems. See also, 12/09, Cybernetics.
04	Protective Equipment	Clothing or equipment providing protection against such environmental elements as heat, cold, noise and machinery. For equipment providing protection against CBR agents, See 15/06/03, Chemical, Biological and Radiological Warfare. For armor, See 19/04, Armor. For equipment and techniques for sustaining life in adverse environments such as space and underwater, See 23/05, Life Support Systems. See also 13/12, Safety Engineering. For electromagnetic shielding to protect electronic equipment, See 09/07, Electromagnetic Shielding.
05	Life Support Systems	Equipment and techniques for sustaining life in adverse environments, such as space and underwater; Systems which provide, as a minimum, respiratory support; Closed ecological systems including space suits, diving gear, oxygen masks, breathing apparatus. For equipment providing protection against CBR agents, See 15/06/03, Chemical, Biological and Radiological Warfare. For equipment providing protection against such environmental elements as heat, cold, noise and machinery, See 23/04, Protective Equipment.
06	Escape, Rescue and Survival	Equipment and techniques for escape and rescue from disabled aircraft, ships, submarines, spacecraft and ground vehicles. Includes rescue signals, flotation devices and survival kits. For fire extinguishing techniques, See 13/12, Safety Engineering. For forest fire fighting techniques, See 02/06, Forestry. For natural disaster planning and operations, See 15/02, Civil Defense.