Specifications & Testing
Linear Weight vs GSM for Wool Fabric: Avoid Unit Errors
What distinguishes grams per linear metre from grams per square metre?
01 · Choose the next action
Three decisions before committing material
Identify mass basis
Use the matching width
Retain original units
Separate what has been observed from what has been inferred. Identify the material, order revision and intended garment before deciding whether the next step is a quotation clarification, a representative sample, a laboratory review or a making trial. Keep unresolved points open rather than treating a reassuring reply as final acceptance.
02 · Avoid the wrong remedy
Common mistakes and the corresponding checks
A linear mass is labelled GSM
Convert with the stated width
Centimetres are used as metres
Normalize units
Net mass and gross mass are mixed
Confirm the measurement basis
A correction should address the identified mechanism or missing evidence. If a trial changes material, construction, finish or assembly, retain the original and revised identities together. Compare them under the same relevant conditions and record who may approve the result. Do not apply an unverified recovery method to all affected material.
03 · Make the question answerable
Send these four records with your enquiry
- Linear mass
- Width basis
- Area conversion
- Conditioning method
For each record, mark what is confirmed, what is a target and what is still unknown. Keep the reference number, date, unit and specification revision visible where relevant. Photographs should retain lighting and location context; test figures should retain sample identity and method. An unknown value is a question to resolve, not permission to invent a specification.
Attach photos or reports manually in your email application. This link prepares a brief; it does not upload files, submit a form or create a confirmed order.
04 · Close the loop
What a usable decision record contains
Retain the original question, representative material, relevant comparison conditions, findings and agreed next action. State whether the decision applies to a development sample, particular colour, identified roll, production lot or complete garment. A limited approval must not silently become an approval of all material.
For a quotation question, confirm the revised quantity, production route and commercial terms in writing. For a quality issue, map affected and unaffected material separately and connect the proposed correction to a traceable trial. For a garment-making problem, test the actual layer stack and intended care where relevant. Keep unresolved material on hold until the responsible parties agree its disposition.
After receiving the answer, update the specification or approval record that production will actually use. Repeat orders should reference the accepted final state and disclose changed inputs, not copy an early development assumption.
05 · Evidence boundary
Manufacturer context and order-specific confirmation
Fred Textile supports OEM and ODM development from order confirmation and raw-material allocation through spinning, weaving, finishing, final inspection and shipment. MOQ, testing, delivery and payment terms remain subject to the fabric program and contract.
Fred Textile's published company materials describe its manufacturing context. They do not establish the composition, stock, certification, test result or available capacity of this enquiry. Current price, MOQ, sample arrangements and delivery terms require confirmation for the actual program.
Fred Textile order and quality workflow →Published 6 October 2026. This is a practical buyer guide, not a customer case study or a laboratory diagnosis. Editorial and source policy.
Questions before the next step
What distinguishes grams per linear metre from grams per square metre?+
Linear mass includes a stated width; GSM describes mass per area. For example, 750 grams per linear metre at 1.5 metres width equals 500 GSM when the same mass and width basis apply. Confirm whether the measured width includes selvedges before comparing quotations.
What should be confirmed before acting on this question?+
The decisions are: Identify mass basis, Use the matching width, Retain original units. Keep the observed condition, material identity and approval scope together. Compare relevant evidence before extending a conclusion to another colour, roll, lot or assembly.
Which evidence should accompany the enquiry?+
Prepare Linear mass, Width basis, Area conversion, Conditioning method. Label confirmed facts separately from targets and open questions. The predictable errors to avoid are: A linear mass is labelled GSM: Convert with the stated width. Centimetres are used as metres: Normalize units. Net mass and gross mass are mixed: Confirm the measurement basis.
Related decisions
All Quality Specs questions →
Search intent: turn a reference into a controlled brief
Catalogue references become useful when the approval path is written down.
A colour page or development diagram cannot prove the final weight, usable width, shrinkage, pilling result or lightfastness of a proposed fabric. Convert the visual reference into a controlled specification: identify the article, revision, target and tolerance, conditioning, test method, sampling stage and release authority. Then separate development evidence from production-finished evidence.
This is especially important for woolen surfaces because finish, moisture, colour and construction can change the result after the first cutting. Ask Fred Textile which result is a target, which is a measured sample result and which still requires bulk confirmation.
Specifications controlled through production
The Fred Textile factory turns an approved swatch into measurable bulk controls.
Composition, finished GSM, usable width, colour, handfeel and performance are linked to the manufacturing route. The order file should keep the approved physical reference, method, tolerance and decision owner visible from development through final inspection.
Our integrated scope covers top dyeing, spinning, weaving, finishing, inspection and shipment coordination. Collection directions include classic woolen styles, firm single-faced blends, double-faced constructions, hairy special programs and recycled-material development.
Top dyeing
Prepare colour and blended fibre direction before yarn formation.
Spinning
Air and mule spinning support woolen and blended yarn preparation.
Rapier weaving
Build solids, checks, herringbones and structured woven constructions.
Finishing
Develop piece-dyed colour, surface, handfeel and dimensional result.
Inspection
Review colour, appearance, handfeel and agreed measurable controls.
Shipment
Coordinate final inspection, order records and shipment arrangement.
Source boundary: capacity, staffing, investment and operating-day figures above are the published company-profile snapshot. Available capacity, construction, tests, certification scope, MOQ, price and lead time must be confirmed for the actual order.