Explore guide
Measure rib contraction and stretch
Measure rib relaxed and under a defined gentle stretch. Use the state relevant to the finished opening, and check recovery after release.
Related lessons and tools
Measure rib relaxed and under a defined gentle stretch. Use the state relevant to the finished opening, and check recovery after release.
Before you start
Gather the measurements, counts or timing sample needed below. Record their units and whether they describe a sample, the whole project or one purchased package. Use a finished sample when dimensions or material use depend on fabric structure.
Try this example
A 12 cm relaxed cuff that opens to 18 cm has a useful stretch range, but must return after release. Do not use 18 cm as its resting width in a schematic.
Check your result
- Recheck the inputs against the actual sample or label, keep units consistent and round only the final count or purchase. Repeat a sample if a small measuring difference changes the decision.
- These arithmetic examples assume the measured structure stays comparable. Shaping, borders, dense textures and color changes require their own allowances or samples.
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