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  • Writer's picturePJF Metrology South

What is Gage RR & Gage R?

Gage repeatability and reproducibility (GR&R) is the process used to evaluate a gauging instrument's accuracy. This is done by ensuring its measurements are not only repeatable, but also reproducible.

A series of measurements is taken to certify that the output is the same value as the input.


Then, the same measurements are obtained under the same exact operating conditions over a set duration of time.


Measurement system variation can be characterized by location (stability, bias, linearity), as well as width or spread (repeatability and reproducibility).


Gage RR & Gage R Technique

This technique can be applied in most manufacturing measurement systems to:

  • Judge new measuring equipment

  • Compare measuring devices

  • Improve instruments

  • Compare equipment before and after repair

  • Calculate process variation and acceptability level for a production process

  • To measure if training is needed on how to use the instruments.

Want to Learn More?

If you're interested in finding out more about Gage RR & Gage R, contact us, or request a quote today!


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