Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Measuring Devices (hierarchy name)
5. measuring devices (instruments)
6. [measuring devices for extent]
7. timepieces
8. [timepieces by form]
9. clocks
10. [clocks by movement]
11. self-winding clocks

Anotations

Scope note:

Clocks with a running duration of eight days. They are either longcase or bracket in form. The interval for winding is seven days, but the additional day is to enable a day's delay in winding. They can often be identified by winding squares on the dial.