Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

Apollo astronauts used this instrument to determing the attitude, in three dimensions, of the Command Module as it traveled through space. It was patterned after a similar indicator used on aircraft, but modified for use on a spacecraft that operated mostly in the absence of aerodynamic forces. This indicator, probably unflown, was removed from its housing for display purposes.

NASA transferred this object to the Museum in 1993.

Collection Item Long Description:

Data Source

National Air and Space Museum


Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum


Credit Line

Transferred from the National Aeronautics and Space Administration


  • Base- Aluminum
  • Faceplate - Plastic
  • Gimbals - Aluminum
  • Sphere- Painted plastic


3-D: 15.2 x 15.2 x 12.7cm (6 x 6 x 5 in.)

Country of Origin

United States of America



Inventory Number