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Monday, July 14, 2014

Gauge R & R Study: The TT Report (Part 4 of 5)

The total tolerance (TT) report analyzes the gauge study against the production tolerance of the part that the system is being evaluated to measure. While the categories are the same (EV%, AV%, GR&R% and PV%), the results are percentages of part tolerance. If the system is being evaluated for a particular purpose, then this report gives a true understanding of whether the measurement system is adequate.

If the study is to determine if a measurement system is adequate for a specific purpose, then the results should be evaluated as a percentage of tolerance and the total tolerance report should be used.

This series of blogs will include:
  • What does it measure?
  • Conducting a Study
  • Evaluating the Gauge Study: The TV Report
  • Evaluating the Gauge Study: The Average and Mean Report
REFERENCE: Quality Magazine, Sept. 1, 2009

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