B40 · Reference edition 2026.11
Clearance and fit — Review and interpretation
Fit includes the stored object, support layers, access space and the way the enclosure is opened. These are separate considerations.
Scope and purpose
Review the record before drawing a conclusion. Look for missing context, ambiguous labels and claims that exceed the evidence. The purpose is to identify what can be understood from the record and what still requires a separate assessment.
Working notes
This collection describes enclosure forms, access routes and documentation practices for paper-based material. It is intended for reading and planning, not for directing treatment of fragile objects. Fold diagrams and record examples are original illustrations with no associated collection or accession data. Material descriptions distinguish observed features from documented properties. Decisions about a real object, its condition and its environment require the relevant professional judgement.
Practical example
Describe where clearance is intended rather than providing one unexplained overall allowance.
| Reference record | Interpretation |
|---|---|
| B40 | Clearance and fit |
| Scope and purpose | Fit includes the stored object, support layers, access space and the way the enclosure is opened. These are separate considerations. |
| Limits and interpretation | An overly tight enclosure can impede access; an overly loose one can allow movement. |
Review checklist
Read the record without relying on memory; check every label; identify uncertainty; decide whether a specialist review is required; retain the original observation.