https://www.righto.com/2025/06/inside-apollo-fdai.html?m=0
Inside the Apollo "8-Ball" FDAI (Flight Director / Attitude Indicator)
During the Apollo flights to the Moon, the astronauts observed the spacecraft's orientation on a special instrument called the FDAI (Flight ...
inside the8 ballapollofdaiflight
https://hackaday.io/project/192332-flight-direction-attitude-indicator-fdai
Flight Direction Attitude Indicator (FDAI) | Hackaday.io
Building a physical FDAI or "8-ball" attitude indicator
attitude indicatorflightdirectionfdaihackaday