Reading alone can provide enough information for the person to form a mental picture of what they need to do. The person pays attention to surface appearance and spatial fit and may ask for verification before proceeding.
Secondary consequence of spatial fit enters the scale at ACL 5.8. They will be careful of how things fit and pay attention to preventing unwanted movements. They will want to use the pin to help hold the pattern and material still.
Score
The tentative score is ACL 5.8.