This Bio-Harness Assembly was made for the Apollo program though was never flown on a mission. It was transferred to the National Air and Space Museum from NASA in 1977.
The Apollo Bio-Harness Assembly was worn under either the intra-vehicular (IV) or extra-vehicular (EV) pressure suit. It consisted of a cotton duck belt with teflon-coated beta cloth pockets into which the electrocardiograph signal conditioner, the impedance pneumograph signal conditioner, and a DC-DC converter were inserted. These instruments monitored the physiological functions of the astronaut. The belt was fitted with snap fastners which attached the assembly to either the constant wear garment or the liquid cooling garment.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.