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在涉及到纽扣尺寸的时候，由于经常使用到这些参数，将L转化成毫米mm和英寸 ",有了对照表就好多了,另外也可以用L乘以一个系数0.625 (1 LIGHES = 0.625 MM /1 MM = 1/25 INCH)。

纽扣的尺寸参数如下：

12L=7.5 MM =5/16"

13L=8.0 MM =5/16"

14L=9.0 MM =11/32"

15L=9.5 MM =3/8"

16L=10.0 MM =13/32"

17L=10.5 MM =7/16"

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"

45L=30.0 MM =1-3/16"

54L=34.0 MM =1-5/16"

60L=38.0 MM =1-1/2"

64L=40.0 MM =1-9/16"