Understanding Type A and Type B Measurement Uncertainty
Learn how Type A and Type B uncertainty evaluations differ, where their estimates originate, and how to combine them in a technically defensible uncertainty budget.
By Andrew Mills
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Practical thinking on calibration management, measurement quality and evidence that stands up to scrutiny.
How Should You Set a Calibration Interval?
Learn how to establish and review calibration intervals using equipment history, usage, risk and measurement performance rather than relying on annual calibration by default.
By Andrew Mills
What Should Happen When Calibration Finds Equipment Out of Tolerance?
How to respond when calibration identifies equipment out of tolerance, including containment, retrospective impact assessment, corrective action and technical records.
By Andrew Mills
Calibration, Verification and Adjustment Are Not the Same Thing
Calibration, verification and adjustment have different technical purposes. Confusing them can compromise equipment status, records and confidence in subsequent measurement results.
By Andrew Mills
What Does Metrological Traceability Actually Require?
A practical explanation of the documented calibration chain, reference standards, uncertainty and evidence needed to establish metrological traceability.
By Andrew Mills