Gage R&R Example — Is This Measurement System Acceptable?
Review a complete crossed study, inspect the measurements and diagnostic charts, and follow the evidence from %GRR to the engineering decision.
Open the worked resource →Public engineering resources
Engineering resources built to be read and used.
Worked examples, calculation guides, and technical notes—from measurement-system and process analysis to control systems, sensors, actuators, and practical project work.
Gage R&R basics
Understand repeatability, reproducibility, operator interaction, %Contribution, %Study Variation, %Tolerance, ndc, and method selection.
Read the guide →ENGINEERING NOTES · 2017–2020
Control, sensors, actuators & project notes
Nine technical notes covering control methods, sensors, actuators, ultrasonics, and aeroponic project work.
Average & Range calculation example
Follow a complete calculation from average ranges through EV, AV, GRR, PV, TV, %GRR, and ndc.
Work through the calculation →Cp vs Cpk: what the difference actually tells you
Compare processes with the same spread but different centering, then connect Cp and Cpk to stability, MSA, and interpretation.
Read the comparison →X-bar and R charts: subgroup logic before limits
See why a stable range chart can coexist with a shifted process mean—and why capability does not erase an SPC signal.
Read the worked guide →