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This is the Inertial Measurement Unit from the Apollo 17 Command Module, the last Apollo mission to the Moon in 1972. This unit, designed by the MIT Instrumentation Lab and built by AC Spark Plug, employed a system of gyroscopes and other devices to provide a reference platform for the successful navigation of the craft from Earth orbit to Lunar orbit and back.

Transferred by NASA to the Museum in 1977.

 Display Status

This object is on display in Human Spaceflight at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Human Spaceflight
Object Details
Country of Origin United States of America Type INSTRUMENTS-Navigational Manufacturer AC Spark Plug Division, General Motors Corporation
 Designer MIT Instrumentation Laboratory
 Dimensions Overall: 10 1/2 in. tall x 1 ft. 1 in. wide (26.67 x 33.02cm)
 Materials Metal housing, containing various metal and electronic parts inside.
 Inventory Number A19770228000 Credit Line Transferred from National Aeronautics and Space Administration Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.