Gyroscope, 25 IRIG


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:

This device contained a gyroscope--a spinning mass--housed in a set of frames calld gimbals, and floated in an inert fluid. The movement of the gyro during an acceleration was translated into data that gave its velocity. Spacecraft including the Apollo Command and Lunar Modules navigated with the assistance of gyroscopes like this one.

This specimen is unflown and was given to the Museum by one of the engineers involved with its design and construction.

Collection Item Long Description:

Data Source

National Air and Space Museum

Restrictions & Rights

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

Credit Line

Gift of William Hall


  • Aluminum housing,
  • plastic cap on one end
  • several exposed wires


2-D - Unframed (H x W): 24.1 × 24.1cm (9 1/2 × 9 1/2 in.)

Country of Origin

United States of America



Inventory Number