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. [cooling, heating and humidifying equipment]
8. temperature control equipment
9. [fire-making and controlling equipment]
10. bellows (fire controlling equipment)

Anotations

Scope note:

Air-blowing tools of varied design but that share an attached pair of bowl-like chambers with long ducts emerging from the base of each. A diaphragm is fitted over each chamber, and these are manipulated to draw and force air from the bellows.