MSA

measurement system analysis

The set of studies that prove a measurement system is fit for its purpose: resolution, bias and Type 1 study, linearity, stability, Gage R&R and attribute agreement. The AIAG MSA manual and VDA 5 describe the methods; IATF 16949 requires MSA for every measurement system in the control plan.

Calculate it

Gage R&R (MSA): Crossed study with ANOVA: repeatability, reproducibility, %GRR, % tolerance and ndc.

Related terms

• %GRR: gauge repeatability and reproducibility
• Bias: systematic measurement error
• Linearity: change of bias over the measuring range
• Cg and Cgk: gauge capability (type 1 study)