Extracting Digital Measurements from 1D Pattern Panels for Tops & Bottoms
Effective Date: April 7, 2026
Last updated: March 5, 2026
1. Purpose
This SOP establishes a standardized, consistent method for extracting accurate garment size measurements (also called Points of Measurement or POM) from digital 1D pattern panels (flat CAD pattern pieces) for tops and bottoms. These measurements verify that the patterns align with target body measurements plus appropriate ease, grade rules, and fit standards. The goal is to ensure sizing accuracy, reduce sample iterations, and maintain quality across all styles and sizes.
2. Scope
Applies to all digital 1D pattern panels (front, back, sleeve, yoke, etc.) for the following categories:
- Tops: Jerseys, short-sleeve, long-sleeve, sleeveless, tank tops, cap sleeves, jackets.
- Bottoms: Shorts, pants, joggers.
This procedure covers body-related (e.g., chest, waist, hip) and style-specific size measurements taken directly from the pattern pieces. It does not cover 3D virtual try-on or physical sample measurement.
3. Responsibilities
- Designer: Performs measurements and records them.
- Technical Designer: Reviews and approves measurements against size charts.
- Quality Control: Verifies final graded patterns.
4. Definitions
- 1D Pattern Panels: Individual flat digital pattern pieces (e.g., front bodice, back bodice, sleeve) in CAD format.
- POM (Points of Measurement): Specific locations on the pattern where measurements are taken.
- Half Measurement: Common for circumference areas (e.g., chest = side-seam to side-seam × 2).
- Body Measurements: Standard human body dimensions (e.g., chest circumference, waist) used as the base for pattern drafting.
- Size/Garment Measurements: Finished pattern dimensions (include ease).
- Seam Allowance (SA): Usually excluded from finished measurements unless specified.
5. Specific Measurements for Tops (Jerseys, Short-Sleeve, Long-Sleeve, Sleeveless, Tank Tops, Cap Sleeves, Jackets)
Use the following POMs. Skip sleeve-related measurements for sleeveless/tank styles.
| POM Code | Description (How to Measure from Panels) | Typical Location / Notes |
|---|---|---|
| HPS Length | High Point Shoulder to hem – measure from HPS (shoulder/neck seam intersection) straight down center front or center back panel to hem edge. | Use center front for most tops; center back for jackets. |
| Chest Width | Side seam to side seam at 1″ (2.5 cm) below armhole seam on front panel; double for full circumference. | Primary body fit measurement. |
| Waist Width | Side seam to side seam at specified drop from HPS (usually 14–18″ down) or natural waist point; double. | Drop distance must be noted in spec. |
| Hem / Sweep Width | Bottom hem edge side seam to side seam; double. | Bottom opening. |
| Across Shoulder | Shoulder seam to shoulder seam across back panel (or yoke if present). | Back shoulder width. |
| Sleeve Length | Shoulder seam (or center back neck for raglan) to sleeve hem/cuff edge along sleeve panel seam. | Short, long, or cap sleeve. |
| Armhole Circumference | Measure full armhole curve on front + back panels combined (or use half armhole depth × 2). | Or measure drop from HPS to underarm. |
| Bicep Width | 1″ below armhole on sleeve panel, perpendicular to sleeve seam; double. | Upper arm fit (long/cap sleeves). |
| Sleeve Opening / Cuff Width | Sleeve hem or cuff edge seam to seam; double (or full if ribbed). | Cuff measurement. |
| Neck Width | Shoulder seam to shoulder seam across neckline on front or back. | Full neck opening. |
| Front Neck Drop | HPS straight down to center front neck seam. | Drop measurement. |
| Back Neck Drop | HPS straight down to center back neck seam. | Usually shallower than front. |
| Collar / Neckband Height (Jackets) | Center back of collar panel from neck seam to outer edge. | If applicable. |
Additional for Jackets: Add pocket placement, hem vent length, or cuff length if present in the style.
6. Specific Measurements for Bottoms (Shorts, Pants, Joggers)
| POM Code | Description (How to Measure from Panels) | Typical Location / Notes |
|---|---|---|
| Waist Width | Top edge of waistband or waist seam, side to side; double (measure relaxed and extended if elastic). | Upper waist or at elastic casing. |
| Hip Width | Side seam to side seam at specified drop from waist (usually 8–10″ / 20–25 cm below waistband); double. | Fullest hip point. |
| Front Rise | From crotch seam point to top of front waistband along front panel center. | Rise length. |
| Back Rise | From crotch seam point to top of back waistband along back panel center. | Usually longer than front. |
| Inseam | From crotch seam down inside leg seam of leg panel to hem edge. | Inside leg length. |
| Outseam / Side Seam | From top of waistband down side seam to hem edge. | Total side length (optional if inseam + rise used). |
| Thigh Width | 1″ below crotch seam, perpendicular across leg panel; double. | Upper thigh. |
| Knee Width (Pants only) | At knee point (usually 14″ below crotch); double. | Mid-leg fit. |
| Leg Opening / Hem Width | Bottom hem edge seam to seam; double. | Cuff or hem opening (relaxed for joggers). |
| Cuff Height (Joggers) | Rib or cuff band height from seam to folded edge. | If cuffed style. |
7. Recording, Verification, & Tolerance
- Enter every measurement into the digital spec sheet with the exact CAD value.
- Compare against the approved body measurement size chart + ease standards (e.g., chest ease = garment chest – body chest).
- Tolerance example: ±0.25″ / 0.6 cm for most widths; ±0.5″ / 1.3 cm for lengths.
- Flag and correct any out-of-tolerance results before grading or sample cutting.
- Archive the measured base-size file and spec sheet for reference.
This ensures every digital pattern panel produces consistent, production-ready body and size measurements for all listed styles.