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. watches

Anotations

Scope note:

Watches that use a clockwork mechanism to measure time with a mainspring which gets wound and holds force which then goes on to power the balance wheel. The gear train transmits the force and also calculates the swings totaling the seconds, minutes and hours.