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. pens (drawing and writing implements)

Anotations

Scope note:

Pens with points made of porous materials, including or resembling felt, and a reservoir of ink in the handle. They became commercially available during the 1960s. In such pens a synthetic polymer of controlled porosity transfers ink from the reservoir to the writing surface. They are used for lettering, drawing, and writing on a variety of surfaces.