# `DimensionOptions.per`

> Contract 2.0.0 · package sha256 `a857eca95b35921109faf997094bb4192f12527d9d0fcd4be7e97f06425bad6e` · generated from `configurator-runtime.d.ts` by `services/onsite-scripter/scripts/build-contract-docs.mjs`; edit the source, not this file.

Property of [`DimensionOptions`](DimensionOptions.md) · stable · since 2.0.0

```ts
per?: 'all' | 'part' | 'node';
```

'part': one ruler set per matched part. 'node': one per scene-model node with a matched part,
measuring that model's own parts without its `space: 'parent'` child models (a vanity without
its towel rail). The value 'node' is labs and experimental: check
[`supports('overlays.dimensions.per.node')`](Session.supports.md) first.

**Default:** 'all'

## Generic-API test (spec 3.1)

| Rule | Result |
| --- | --- |
| 1. Neutral name | pass: `per` names no product |
| 2. A precedent | pass: [Intl.NumberFormat](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat) (row `G14`); [Unity Renderer.bounds](https://docs.unity3d.com/ScriptReference/Renderer-bounds.html) (row `G14`) |
| 3. Two apps, or labs | pass: 4 apps (ledger: app-ceb4eccc72, app-fb16dd1985, app-fc306ec3dc, app-fd09090420) |
| 4. The cheaper fix first | decided per need in Appendix B: rows `G14` at tier stable (a member only where no rule, data, asset or app code serves the need) |