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. [temporary alphabetical list: recreational artifacts]

Anotations

Scope note:

Exercise machines consisting generally of two parts: an elastic or fabric band and a motor to induce vibrations in the band. Built to simulate massaging the body. Invented in the early 20th century, with usage particularly popular in the early to mid-20th century.