What needs to be clarified
Review batch measurements and deviation calculations, distinguishing body dimensions, design allowances and agreed finished-jacket control dimensions within the relevant size groups.
Materials to prepare
- Size chart, technical description and approved patterns or drawings
- Size-labelled jackets linked to lot items
- Measurement protocol with points, fastening position and raw values
What to compare
Clarify each dimension’s meaning and specified measurement rules. Repeat without stretching and in consistent positions, recording fastening and layer thickness. Tabulate by size group and check deviation arithmetic. Use ease allowances only where design supports them; assess sampling separately rather than pooling sizes into one mean.
Possible outcome of the analysis
A recalculated protocol may separate body and garment dimensions, identify comparison errors and list jackets with measured departures from agreed control dimensions.
Limits of the conclusions
Doubled flat width may not equal the specified garment circumference. Poor fit alone does not establish grading error; without design allowances, size-chart conformity cannot be reliably assessed.