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. image-making equipment
8. [equipment for printing and printmaking]
9. image transfer equipment

Anotations

Scope note:

Term typically applied in the context of letterpress printing, referring to localized or micro-adjustments made to a matrix or to cylinder, platen, or tympan packing to remedy issues with irregular impressions. The adjustments typically consist of torn or cut paper or other thin material being placed under or over a matrix (ie. on the press bed or on the cylinder, platen, or tympan) to increase pressure in an area with lighter or no impression. The term may also refer to the activity of preparing for printing including proofing and other adjustments to pressure, ink, etc.