纽扣的号数是怎么算的?

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纽扣的号数是怎么算的?
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纽扣的号数是怎么算的?
纽扣的号数是怎么算的?

纽扣的号数是怎么算的?
中国以纽扣的外径来表示;国际上通常以莱尼(ligne)作为纽扣大小的计量单位.1莱尼等于0.635mm,换算关系如下:
1L=0.625MM、1MM=1/25英寸(INCH)
相关号数对应表:
12L=7.5 MM =5/16"
14L=9.0 MM =11/32"
16L=10.0 MM =13/32"
18L=11.5 MM =15/32"
20L=12.5 MM =1/2"
22L=14.0 MM =9/16"
24L=15.0 MM =5/8"
26L=16.0 MM =21/32"
28L=18.0 MM =23/32"
30L=19.0 MM =3/4"
32L=20.0 MM =13/16"
34L=21.0 MM =27/32"
36L=23.0 MM =7/8"
40L=25.0 MM =1"
44L=28.0 MM =1-3/32"
48L=30.0 MM =1-3/16"
50L=32.0 MM =1-5/16"
54L=34.0 MM =1-11/32"
60L=38.0 MM =1-1/2"
70L=44.0 MM =1-12/16"
80L=50.0 MM =1-31/32"
90L=58.0 MM =2-9/32"
100L=62.5 MM =2-15/32"