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. agricultural equipment
8. winnowers (agricultural equipment)

Anotations

Scope note:

Devices for separating grain from the chaff, that employ a riddle, which is a coarse-meshed sieve formed of cross pieces of wires or stiff fiber, supported on circular rim with a base shaped like a shallow drum.