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| Decision field | Open accessPattern Grading & Size-Run Validation RecordGlobalRemove | Open accessSeam Allowance ConverterGlobalRemove | Open accessYarn Database EU Dyers and MakersEuropean UnionRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Find patterns & fit | Find patterns & fit | Choose materials |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Patterns & fit | Yarn |
| Best for | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence | Translating a seam allowance already stated by a pattern or controlled specification | Finding independent EU yarn or fibre dyers with off-Ravelry purchase routes |
| 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. | This is a unit-translation reference. It does not select, approve, or change a seam allowance; establish a universal fraction; interpret an unstated cutting or stitching line; or replace the exact pattern version, controlled specification, material and seam evidence, sample, production method, equipment, tolerance, or release authority. | It is one curator's intentionally selective, off-Ravelry-oriented database, inventories change, and paid supporters can receive rotating priority placement; verify availability, fibre claims, shipping, and terms directly. |
| Practical access | |||
| For | Apparel brands | Both | Makers |
| Location or jurisdiction | Global | Global | European Union |
| Access | Open access | Open access | Open access |
| Format | Stitch Authority | Stitch Authority | Directory |
| 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. | NIST states that one inch is exactly 25.4 millimetres, and the SI decimal relationship makes one centimetre equal to 10 millimetres. The tool uses those factors, displays rounded equivalents, exposes the size difference to the nearest 1/16 inch when converting to inches, and preserves valid value, source-unit, and target-unit state in the URL. | The individually researched database offers free listings and sortable yarn, fibre, designer, editor, accessory, and location views; the EU page spans multiple countries and direct seller profiles. |
| Linked page reviewed | Jul 27, 2026 | Jul 28, 2026 | Jul 15, 2026 |
| Next review due | Jul 27, 2027 | Jul 28, 2027 | Jan 11, 2027 |
| Inspect | |||
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