Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by process]
7. audiovisual equipment
8. projectors (image projectors)
9. slide projectors

Anotations

Scope note:

Devices for still-image instructional multimedia that use rolls of reversal film and a separate soundtrack with commentary on the visual material on the filmstrip. These are designed to advance images one frame at a time with cues provided by the soundtrack.