Button Ligne Calculation Procedure for Garments

How to Measure Button Ligne in Apparel Industry?


Ligne is a French word meaning "line" and it is abbreviated with the letter L. Internationally, ligne is used to recognize button size. Ligne is a liner unit (1/40 inch) used to measure the diameter of buttons. Usually, watchmakers, button-makers, and hat-makers use Ligne to measure their product size. 


Before calculating button line we should know following measurement: 


§  1 inches = 40 ligne = 2.54 cm,

§  1 ligne = 0.635 mm
§  12 Pcs = 1 Dozen,
§  12 Dozen = 1 Gross,
§  12 Gross = 1 GG (1728 pcs).

Example-1: Figure out ligne of a button with 10mm Dia?
§  10 / 0.635 = 15.75 ligne or 16 L (L means ligne)
Formula: Button Dia in mm / 0.635 or 1 / 0.635 x button Dia in mm
Example-3: Per sweater has 6 buttons, total order quantity 3456 pcs, figure out total button quantity in GG?
§   6 x 3456 / 1728 = 12 GG.
Formula: number of buttons per product X order quantity / 1728 (1 GG = 1728 pcs)

BUTTON SIZING CHART
Relation Between Ligne, Millimeters, and Inches

SL No.
Ligne (L)
Millimeters (mm)
Inches
01
14
9.20
0.35
02
16
10.5
0.40
03
18
11.6
0.45
04
20
12.5
0.50
05
21
13.5
0.53
06
22
14.2
0.55
07
23
14.8
0.58
08
24
15.0
0.60
09
27
16.8
0.68
10
28
17.8
0.7
11
30
19.0
0.75
12
32
20.5
0.80
13
34
21.5
0.85
14
36
22.9
0.90
15
40
25.4
1.00

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