Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Recreational Artifacts (hierarchy name)
5. recreational artifacts (equipment)
6. toys (recreational artifacts)
7. [toys by form]
8. optical toys

Anotations

Scope note:

Optical toys that create moving images, consisting of a slotted disk featuring a series of images that appear to move when the disk is spun and viewed through the slots before a mirror. Its invention is attributed to Joseph Plateau in 1833. Distinct from "stroboscopes," similar devices that employ two disks in place of the mirror.