1. The breakdown left the station running on only two gyroscopes, the bare minimum.
2. The mission's star tracker and gyroscopes were the most precise ever designed and produced.
3. gyroscopes
3. The breakdown left the station with just two functioning gyroscopes, the bare minimum needed to keep the complex stable and pointed in the right direction.
4. The space station has four gyroscopes to keep it steady and pointed in the right direction.