B37 · Reference edition 2026.11

Clearance and fit — Layout and sequence

Fit includes the stored object, support layers, access space and the way the enclosure is opened. These are separate considerations.

Scope and purpose

Place the relevant elements in a visible order before completing the record. A diagram should distinguish position from sequence and should preserve the orientation used in the written notes. Review the example for a practical way to make the relationship explicit.

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.

Clearance and fit — Illustrative reference; not a tested product or a certification.
Clearance and fit. Illustrative reference; not a tested product or a certification.

Practical example

Describe where clearance is intended rather than providing one unexplained overall allowance.

Reference recordInterpretation
B37Clearance and fit
Scope and purposeFit includes the stored object, support layers, access space and the way the enclosure is opened. These are separate considerations.
Limits and interpretationAn overly tight enclosure can impede access; an overly loose one can allow movement.

Review checklist

Identify the starting condition; mark the order or orientation; check that labels in the figure match the accompanying table.

Limits and interpretation

An overly tight enclosure can impede access; an overly loose one can allow movement. Measurements and examples are descriptive, not acceptance criteria.

Related reading

Clearance and fit →