A46 · Reference edition 2026.11
Layout changeovers — Definition and boundaries
A repeatable changeover record identifies which items stay, which move and which are replaced. It also records the previous valid arrangement.
Scope and purpose
Start by separating the named concept from adjacent concepts. Use the observation below to identify the question the record is intended to answer. Read the caution before applying the example. A definition is useful only when another reader can tell what falls outside it.
Working notes
This reference collection concerns light, offline dimensional-inspection layouts. It brings locating concepts, component descriptions and revision records together without substituting for an engineered fixture design. The drawings are original explanatory diagrams. Reference IDs identify documents, not commercially tested products. Read the scope and limitations alongside each example, and keep the actual part drawing and inspection requirements available when reviewing a proposed layout.
Practical example
Compare two layout revisions with unchanged, relocated and replaced component lists.
| Reference record | Interpretation |
|---|---|
| A46 | Layout changeovers |
| Scope and purpose | A repeatable changeover record identifies which items stay, which move and which are replaced. It also records the previous valid arrangement. |
| Limits and interpretation | Matching part names do not prove that an old layout is still suitable. |
Review checklist
Write a one-sentence scope statement; identify a neighbouring concept; record what the example does not establish.