Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by process]
7. image-making equipment
8. [equipment for drafting, drawing, and writing]
9. [drafting, drawing and writing equipment by specific type]
10. writing equipment
11. writing boards (writing equipment)

Anotations

Scope note:

Boards with a dark, usually black or green, surface for writing or drawing with chalk or a similar material. Examples of use include as a teaching aid in classrooms, and in shops, restaurants, or elsewhere for displays, usually words, that may be easily altered.