Gage R&R Evidence: Which Gauge Serial Did Appraisers Use?
Your MSA report names one gauge serial. Three appraisers on three shifts used the crib. Prove which serial they held, and that it was calibrated.
Category: IATF 16949 & MSA
Gauge Family MSA: One Gage R&R for Twelve Identical Gauges
One Gage R&R covering twelve identical bore gauges holds up only if the other eleven are calibrated, mastered and controlled alike. Here's the evidence.
Conditional Gage R&R: Turn 10–30% %GRR Into Controls
Your bore gauge came in at 18% GRR and the customer said "acceptable, with conditions." Here's how to make those conditions survive to the next audit.
Bias & Linearity Studies: Control the Reference Master
A bias study is only as good as its reference value. What happens when the auditor asks for the setting ring's certificate on the study date?
%GRR: %Tolerance vs %Study Variation Explained
Your Gage R&R read 9%. Against tolerance, or the parts you grabbed? The denominator trap that decides whether your PPAP element 8 study survives review.
Was the Gauge in Cal When the Gage R&R Ran?
Your %GRR passed at 8%. But was the gauge in cal on the study date? Why IATF auditors void good MSA studies — and how to keep the two records agreeing.