Quality & Metrology worked example

Gauge Reproducibility with highest operator average reading of 25 measured units: a worked example

What does the result look like when highest operator average reading reaches 25 measured units? The full calculation is worked below with real intermediate numbers. Use it when checking operator-to-operator variation, the reproducibility part of a gage study, on a shared measurement.

The inputs for this scenario

  • Highest operator average reading: 25 measured units (raised for this scenario; the documented default is 10.04)
  • Lowest operator average reading: 9.99 measured units (unchanged)
  • Nominal or master (certified reference) value: 10 measured units (unchanged)

Working through the calculation

  • Applying the documented formula (Reproducibility range = highest operator average − lowest operator average) to the inputs above produces each figure below.
  • At this operating point the engine returns 0 units for reproducibility variation, the number this scenario is built around.
  • At this operating point the engine returns 0 value for spread.
  • At this operating point the engine returns 25 value for minimum.
  • At this operating point the engine returns 9.99 value for maximum.

How this compares with the baseline

  • Against the tool's baseline example, where highest operator average reading sits at 10.04 measured units and the headline result is 0 units, this scenario lands almost exactly on the baseline at 0 units.
  • A figure at this level is achievable when highest operator average reading is genuinely sustained, not just peaked for a shift. Range of operator averages is a quick approximation; a proper AIAG study removes the equipment-variation portion from AV and uses a d2 factor, so this is a screening tool rather than a certified appraiser-variation number.

Results at a glance

  • Reproducibility variation: 0 units (headline result)
  • Spread: 0 value
  • Minimum: 25 value
  • Maximum: 9.99 value

Run it with your numbers

  • Every input above is editable in the live Gauge Reproducibility calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.