Metrology and analysis

Which technique evaluates whether a measuring instrument's repeatability and reproducibility are small enough compared with the process variation to be controlled?

  1. APareto analysis
  2. BGage R&R (measurement system analysis)
  3. CFMEA
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Answer: B. Gage R&R (measurement system analysis)

Variation in measured values includes the variation of the measuring instrument as well as that of the process itself. Gage R&R evaluates variation when the same sample is measured repeatedly (repeatability) and when operators or tools are changed (reproducibility), to judge whether the instrument can be used for process control.

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