This is a part of the guidance system for the Gemini 3 spacecraft, flown on March 23, 1965, by astronauts Virgil Grissom and John Young. Unlike its Mercury predecessor, the Gemini spacecraft was capable of modifying its orbit, for which it required an on-board inertial platform and digital computer. The Gemini 3 mission, the first manned Gemini mission, did not execute such maneuvers, but it did sucessfully test these systems.
Transferred from NASA to the National Air and Space Museum in 1972.
Transferred from the National Aeronautics and Space Administration