What It Is Used For
- To determine the variation in the measurement system due to the measurement equipment itself and its use by the appraisers.
When to Use It
- Before implementing SPC techniques or conducting designed experiments to verify that a sound measurement system exists.
- Periodically to ensure the measurement system has not degraded.
- Most common GR&R Techniques are for non-destructive testing of variable-data measurement devices. The techniques must be modified for destructive testing and for attribute-data measurement devices.