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]

Anotations

Scope note:

Slender, compressed cylinders of material often made from calcium sulfate in its dihydrate form, gypsum. Most often used to write on blackboards or chalkboards in classroom contexts, but also for many other marking purposes.