Definition and context
Gage R&R confirms whether inspection data is trustworthy before teams act on it.
It is a core method within broader measurement system analysis practices.
What Gage R&R measures
Repeatability checks variation when the same operator measures the same part repeatedly.
Reproducibility checks variation between operators using the same method and equipment.
Decision thresholds
State whether the percentage is measurement variation relative to study variation or tolerance. These use different denominators. Assess the result against the intended measurement task.
When results are poor, teams should revise the control plan and retrain operators.
Check fixtures, method, resolution and operator technique when the result is poor. Calibration alone does not establish acceptable Gage R&R.
Where this term fits in the workflow
Gage R&R is usually shown in the process control and risk.
Terms that help factories monitor variation, validate capability, and reduce risk before defects escape.
What is KaizenQ?
KaizenQ helps factory teams record inspection results, defect photos, and notes in one report shared with the office.
Learn more
Key takeaways
- Reliable measurement is a prerequisite for reliable quality decisions.
- Gage R&R separates process variation from measurement noise.