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| Decision field | Open accessPattern Test Brief TemplateGlobalRemove | Open accessSeam Allowance ConverterGlobalRemove | PaidPatternLab LondonGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Find patterns & fit | Find patterns & fit | Find patterns & fit |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Patterns & fit | Patterns & fit | Patterns & fit |
| Best for | Planning a sewing, knitting, or crochet pattern test | Translating a seam allowance already stated by a pattern or controlled specification | Generating an editable custom-measurement block |
| Know before using | The workflow is not a contract or quality certification; local legal duties and technical review may still apply. | 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. | A measurement-generated draft is a starting block, not independent evidence of body capture, comfort, mobility, balance, garment ease, or production fit. The result depends on measurement accuracy, supported ranges, formula assumptions, selected options, and output handling. Review the service's privacy terms before storing body data and sew a representative toile before design, grading, or production use. |
| Practical access | |||
| For | Both | Both | Both |
| Location or jurisdiction | Global | Global | Global |
| Access | Open access | Open access | Paid |
| Format | Stitch Authority | Stitch Authority | Software |
| Source type | Stitch Authority | Stitch Authority | First-party platform |
| Source and review | |||
| What the source establishes | The linked tool or guide is maintained inside Stitch Authority and was checked against its current public interface. | 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. | PatternLab London's current drafting page says a user creates a measurement profile, selects a basic block or sloper, adjusts fit, dart placement, length, seam allowance, and sleeve options, then downloads the generated result as tiled PDF, AI, or SVG. The live catalogue names bodice, dress, trouser, and stretch blocks and displays a price before purchase. |
| Linked page reviewed | Jul 15, 2026 | Jul 28, 2026 | Jul 21, 2026 |
| Next review due | Jul 15, 2027 | Jul 28, 2027 | Jan 17, 2027 |
| Inspect | |||
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