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. reprographic equipment
8. duplicators

Anotations

Scope note:

Spirit duplicators that employ a manual printing method devised in 1923 involving a 2-ply master sheet as a plate. One layer of the master may be typed or drawn on, and the second layer is coated with wax and colorant. Marks made to the first sheet are transferred to its rear, coated side. The sheet with the transferred wax image is then attached to a drum on the machine that revolves over paper, gradually transferring the wax onto a paper support by means of a solvent. Approximately 40 copies or prints can be made in this way.