Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by general context]
6. hardware (components)
7. [hardware by form]
8. finish hardware (hardware)
9. [hinges and hinge components]
10. hinges (hardware)
11. [hinges by visibility]

Anotations

Scope note:

Door hinges that are visible when the door is open but concealed when the door is closed. Distinguished from "invisible hinges" which are completely concealed, from the outside, whether the door is open or closed.