Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Information Forms (hierarchy name)
5. information forms (objects)
6. information artifacts
7. [information artifacts by physical form]
8. globes (cartographic spheres)
9. celestial globes

Anotations

Scope note:

Skeleton models of the celestial sphere, generally having the earth at the center, consisting of a framework of rings depicting the relative position of such astronomical elements as the celestial equator, the ecliptic, the zodiac, and the planets. They were first developed by the ancient Greeks and used especially during the 14th through 16th centuries as an aid to navigation.