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. [shaping and guiding equipment]
8. [shaping and guiding tools]
9. squares (tools)

Anotations

Scope note:

Squares usually consisting of a thin blade made of wood or metal which is attached at a right angle to the end of a thicker stock which may be placed against the edge of a drawing board or the like; predominantly used to draw or mark something at right angles.