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| Decision field | Open accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemove | Open accessApparel Measurement Tolerance Setting RecordGlobalRemove | Free accountRavelryGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Find patterns & fit | Source production | Choose materials |
| Area | Patterns & fit | Production | Yarn |
| Best for | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence | Turning an inherited or proposed garment tolerance into a controlled POM method, capability study, decision boundary, inspection rule, and change record | Broad pattern, yarn, and project research |
| Know before using | The record does not create a production grade, supply universal increments or breakpoints, validate a CAD file or fit population, reproduce licensed standards, or replace qualified anthropometric, pattern, technical-design, fit, quality, accessibility, safety, statistical, and user-research review. | The record does not supply universal POM values, validate fit across a population, prove process capability, choose a statistical study or sampling plan, reproduce licensed standards, or replace qualified technical, fit, quality, statistical, safety, compliance, and legal review. | An account is required and community, publisher, designer, shop, yarn, and project records can vary in currency and accuracy. Search results, ratings, favorites, and project examples do not establish pattern accuracy, yarn availability, seller reliability, fit, gauge, or project suitability. Confirm current files, errata, license, purchase and refund terms, measurements, yarn details, and shop information with the responsible source. |
| Practical access | |||
| For | Apparel brands | Apparel brands | Makers |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Open access | Free account |
| Format | Stitch Authority | Stitch Authority | Community |
| Source type | Stitch Authority | Stitch Authority | Community database |
| Source and review | |||
| What the source establishes | The guide cites current ISO body-table, size-designation, and garment-measurement boundaries plus two peer-reviewed studies that tested the relationship between conventional grade rules, anthropometric evidence, and garment fit; it requires product-specific target deltas and validation instead of publishing universal increments. | The guide cites current ISO, AATCC, and NIST sources for body and garment measurement boundaries, textile conditioning, dimensional-change testing, repeatability and reproducibility, and AQL-indexed sampling, while requiring the live product owner to set rather than inherit numerical tolerances. | Ravelry's official description identifies a user-driven database of knitting and crochet patterns and yarns, searchable directories for designers, pattern sources, local yarn stores and yarn brands, and a personal notebook for projects, stash, tools, library items, queues, and favorites. Community members and volunteer editors add and maintain the database records. |
| Linked page reviewed | Jul 16, 2026 | Jul 15, 2026 | Jul 21, 2026 |
| Next review due | Jul 16, 2027 | Jul 15, 2027 | Jan 17, 2027 |
| Inspect | |||
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