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Decision fieldOpen accessApparel Grade-Rule & Size-Run Validation RecordGlobalRemoveOpen accessAIC Find a ProfessionalUnited States · North AmericaRemoveOpen accessHook & Needle Diameter ReferenceGlobalRemove
Decision fit
Primary jobFind patterns & fitRepair & conserveLearn techniques
AreaPatterns & fitTechniques & repairYarn
Best forAuditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidenceFinding professional textile or costume conservation help in the United StatesChecking which U.S. alias the current Craft Yarn Council table gives a known metric package size before confirming project gauge
Know before usingThe 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 directory is opt-in and excludes qualified people who do not list; designation does not guarantee availability, price, or suitability for a specific object or treatment.The reference is not a dimensional measurement, manufacturer inspection, UK or Canadian conversion, steel-hook chart, tool recommendation, yarn assignment, gauge result, or proof that a proposed tool will produce the required fabric.
Practical access
ForApparel brandsBothMakers
Location or jurisdictionGlobalUnited States · North AmericaGlobal
AccessOpen accessOpen accessOpen access
FormatStitch AuthorityDirectoryStitch Authority
Source typeStitch AuthorityIndustry organizationStitch Authority
Source and review
What the source establishesThe 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.AIC says listed Professional Members complete a peer-reviewed application and may be searched by specialty, material, service, location, or name.The lookup reproduces the current public Craft Yarn Council metric and U.S. alias rows and follows the Council's warning that company letter and number labels vary; blank aliases remain blank instead of being inferred.
Linked page reviewedJul 16, 2026Jul 16, 2026Jul 16, 2026
Next review dueJul 16, 2027Jan 12, 2027Jul 16, 2027
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