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 forces]
7. weighing devices
8. [weighing devices by form]
9. scales (weighing devices)

Anotations

Scope note:

Scales with fixed counterweights at one end of a horizontal bar, a movable fulcrum which allows for changes in the ratio of the lengths of the arms, and a single hook from which to attach the item to be weighed; for scales of similar form, but with a fixed fulcrum and a movable counterweight, use "steelyards."