Points of Measure Explained

The three parts

1. The dimension — chest, body length, sleeve opening
2. How it is measured — the exact method, because there is more than one way to measure almost anything
3. The tolerance — how far production may vary before the garment is wrong

Brands routinely supply the first and skip the other two, then find that the factory measured somewhere else and that “off-spec” is unarguable.

Why the method has to be written down

Take “chest”. Measured where — at the underarm seam, or 2.5 cm below it? Laid flat and doubled, or as a circumference? Relaxed or extended? Four reasonable people measuring “chest” on the same garment will produce four numbers.

Write it as an instruction: “Chest: 2.5 cm below armhole, laid flat, measured across, x2 for circumference.” Now there is one answer.

Common points of measure

• Body length from high point shoulder (HPS)
• Chest, 2.5 cm below armhole
• Waist, at narrowest point or at a stated distance from HPS
• Bottom sweep
• Shoulder to shoulder, seam to seam
• Sleeve length from centre back, or from shoulder point
• Sleeve opening / cuff width
• Armhole, straight or curved — say which
• Neck width, seam to seam
• Front and back neck drop
• Rib or binding height
• Hem depth

Tolerances

Tolerance is not sloppiness, it is physics. Fabric relaxes, operators vary, and no two garments are identical. The question is how much variation you can live with before a customer notices.

• Large, forgiving dimensions — body length, chest, sweep: around ±1 cm is common
• Smaller or more visible dimensions — shoulder, neck width, cuff, armhole: around ±0.6 cm
• Finished details — rib height, hem depth, topstitch distance: around ±0.3 cm
• Knits generally need slightly wider tolerances than wovens, because the fabric moves

Tighten a tolerance only where it matters. Every tolerance you tighten adds cost, because it raises the proportion of garments the factory has to rework.

Measuring knits consistently

Lay the garment flat on a hard surface, smooth it without stretching, let it relax for a moment, and measure. Say so on the spec sheet. “Measured flat, relaxed, not extended” removes most knit measurement disputes before they start.

Units

Pick centimetres or inches and use one across the entire tech pack. Mixed units in a single document is one of the most common and most expensive errors in apparel specs.

Where the spec earns its money

At inspection. A measured garment compared against a graded spec with tolerances gives a factual pass or fail. Without it, quality conversations become an argument about taste, and you will lose that argument with your money already paid.