Supplier's Category: All Metrology & Dimensional Inspection: CMM, 3D scanning, and laser tracking
Metrology and dimensional inspection measures a part’s actual geometry against its drawing — using coordinate measuring machines (CMM), 3D scanning, or laser tracking to verify dimensions, form, and tolerances. It’s the objective check that a manufactured part actually matches what was specified.
Measurement equipment choice should match the tolerance and part size involved, since not every method is accurate or practical at every scale.
- Confirm measurement uncertainty of their equipment is small relative to your tightest specified tolerance
- Check whether they provide a full dimensional report (GD&T callouts verified individually) or just a pass/fail summary
- Ask about first-article inspection turnaround if this gates your production release
Related terms: coordinate measuring machine (CMM), 3D scanning inspection, laser tracker metrology, first-article inspection (FAI), GD&T verification, dimensional tolerance reporting, measurement uncertainty, reverse-engineering-grade scanning
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Where dimensional inspection fits in production
This is typically a gating step — production doesn’t proceed to volume until first-article parts pass dimensional inspection.
Typical sequence
- First-article inspection on initial production parts, verified against the full drawing
- Periodic in-process inspection sampling during production runs
- Final inspection before shipment for critical dimensions