Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Single Built Works (hierarchy name)
5. single built works (built environment)
6. [single built works by specific type]
7. [single built works by function]
8. mills (buildings)
9. windmills

Anotations

Scope note:

Small, primitive windmills designed for drainage of plots of land or at peat digging sites as they are easily moved. Most often identified as a Frisian design, these are found in other Dutch provinces, and Northern Germany. Characterized by a single shaft supporting the sails on one end and an Archimedean screw on the other, allowing for a gearless action.