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. elemental forces measuring devices
8. electricity measuring devices

Anotations

Scope note:

Measuring devices for determining and graphically recording or indicating the waveforms of changing quantities of electrical energy. In general, these are considered the same instrument as an oscilloscope, except that the oscillograph may be capable of creating a permanent record of the measurements, while the oscilloscope provides only visual feedback.