This Bio-Harness Assembly was worn under the Mercury pressure suit and was worn by John Glenn during his historic Friendship 7 flight on February 20, 1962.
The components consisted of an electrocardiograph signal conditioner, an impedance pneumograph signal conditioner and a DC-DC converter. These instruments monitored the physiological functions of the astronaut. The sensor attachment in the helmet was for respiration count.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
United States of America
PERSONAL EQUIPMENT-Medical
John H. Glenn, Jr.
Unknown
3-D (As Displayed): 61 × 3.8 × 1.3cm (24 × 1 1/2 × 1/2 in.)
Sensors: Rubber, aluminium
Wires: Plastic-coated copper wire
Microphone: aluminium
A19670189000
Transferred from NASA - Manned Spacecraft Center
National Air and Space Museum
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