Advanced Inertial Reference Sphere (AIRS) inertial guidance unit of an LGM-118 Peacekeeper intercontinental ballistic missile.
https://diqn32j8nouaz.cloudfront.net...l_guidance.jpg
Previously:
https://www.homemadetools.net/forum/...215#post149973
https://www.homemadetools.net/forum/...474#post151126
https://www.homemadetools.net/forum/...171#post134605
