Measurement Chart
A measurement chart is a document that shows the finished dimensions of each part of a product, size range, measurement points, and tolerances, and serves as a common standard from planning through production and inspection.
Contents6 sections
Definition and Overview
A measurement chart is a table that organizes the dimensions of each part of a finished garment or apparel product, such as body width, garment length, sleeve length, and inseam, by size. It is used as numerical information to reproduce the design intent and fit on the production floor.
It is generally created as part of the specification sheet and used together with the pattern, sewing specifications, and trim instructions. By adding diagrams, part names, and measuring methods, it makes it easier for planners, pattern makers, factories, and inspection staff to align their judgments.
- Product name, product number, target size, creation date, revision history
- Part name, measuring point, finished dimensions, unit
- Dimension differences between sizes
- Tolerance range and conditions at the time of measurement
Role in Product Development
A measurement chart is the standard used to communicate the silhouette and size design set during planning to pattern making and grading. The first sample is used to check the actual measurements and fit, and the revisions are reflected to finalize the production instructions.
In mass production, the factory refers to it for cutting and sewing control, and for finished goods it becomes the inspection criterion. For products whose dimensions change through washing, garment dyeing, pressing, or similar processes, it also clarifies which stage after each process is used as the reference.
How to Create and Check It
First, set the base size based on the target customer, wearing occasion, and ease, then select the necessary measuring points. It is important to define not only the dimensions on the pattern, but also the areas that can be measured after sewing and that affect fit.
Next, decide the size intervals and measure the prototype flat. When checking the sample, confirm not only the numbers but also how it looks on the body or dress form, mobility, left-right differences, and seam shrinkage, and share the points to be revised among the relevant parties.
The measuring points should specify the starting and ending points, whether to fasten buttons, and whether to lay the product flat without pulling it, using diagrams. For stretch products, distinguish between dimensions in the natural state and how they are handled when stretched as needed.
Notes on Ordering and Quality Control
When placing an order, confirm that it is the latest measurement chart and that the figures match among the specification sheet, pattern, and sample. Mixing old versions or making verbal corrections can cause size errors, resewing, and delivery delays.
The tolerance range is set based on the importance of the part, the fabric stretch and shrinkage, the sewing specifications, and the processing conditions. Do not treat all parts the same; for areas that significantly affect wear or appearance, clearly define the control standard.
During inspection, flatten the product using the specified measuring method and compare it with the specified size. Even when the dimensions are within tolerance, also check whether left-right differences, twisting, puckering, or similar issues affect appearance or wearability.
Differences from Similar Terms
A measurement chart is a document centered on the numerical standards of the finished product. A pattern is a template for cutting fabric, and it is designed to include seam allowance and changes caused by sewing, so it is not the same as a measurement chart.
A specification sheet is a comprehensive production instruction sheet that includes materials, colors, trims, sewing methods, processing, labeling, and more. A measurement chart is often used as the section related to dimensions within it, or as a separate attachment. Grading refers to the work of expanding the base-size pattern to other sizes.
Frequently Asked Questions
Is a measurement chart the same as a consumer size chart?
They may be based on the same numbers, but their purposes differ. A measurement chart defines measuring points and tolerances as production instructions for the factory and as inspection criteria. A consumer size chart, on the other hand, is generally displayed as a purchasing reference, focusing on easy-to-understand parts.
Is a tolerance range always necessary in a measurement chart?
When used as an inspection standard for mass-produced items, it is important to list the tolerance range. It is set for each part, taking into account fabric stretch, sewing, and process variation. However, the appropriate range differs depending on the product specifications and the buyer's standards, so prior agreement is necessary.
What should be included in a measurement chart for stretch materials?
In addition to the finished dimensions in the naturally laid-flat state, clearly state that the fabric must not be pulled during measurement. For products where stretch during wear is important, separately share the checking conditions when stretched and the range of intended wearers. It is important not to confuse dimensions with stretchability.
