欧美为机芯/壳子互换而制定了各自的行业标准机芯尺寸单位，美制单位为尺码（Size），欧洲用法分（Ligne）。
下表中美制单位为后期的 Lancashire Gauge，不是早期的 Dennison System，而欧洲两百多年前就用 Ligne ，一直用到现在。
美制尺码 分数英寸 小数点英寸 法分（令） 公制 mm
Watch Size
| Fraction Inch
| Decimal Inch
| Ligne Size
| Millimeter |
18
| 1 inch 23/30
| 1.766
| 19.87
| 44.86
| 17
| 1 inch 22/30
| 1.733
| 19.50
| 44.02
| 16
| 1 inch 21/30
| 1.700
| 19.12
| 43.17
| 15
| 1 inch 20/30
| 1.666
| 18.75
| 42.33
| 14
| 1 inch 19/30
| 1.633
| 18.37
| 41.48
| 13
| 1 inch 18/30
| 1.600
| 18.00
| 40.63
| 12
| 1 inch 17.30
| 1.566
| 17.62
| 39.79
| 11
| 1 inch 16/30
| 1.533
| 17.25
| 38.94
| 10
| 1 inch 15/30
| 1.500
| 16.87
| 38.09
| 9
| 1 inch 14/30
| 1.466
| 16.50
| 37.25
| 8
| 1 inch 13/30
| 1.433
| 16.12
| 36.40
| 7
| 1 inch 12/30
| 1.400
| 15.75
| 35.55
| 6
| 1 inch 11/30
| 1.366
| 15.37
| 34.71
| 5
| 1 inch 10/30
| 1.333
| 15.00
| 33.86
| 4
| 1 inch 9/30
| 1.300
| 14.62
| 33.01
| 3
| 1 inch 8/30
| 1.266
| 14.25
| 32.17
| 2
| 1 inch 7/30
| 1.233
| 13.87
| 31.32
| 1
| 1 inch 6/30
| 1.200
| 13.50
| 30.47
| 0
| 1 inch 5/30
| 1.166
| 13.12
| 29.63
| 00 or 2/0
| 1 inch 4/30
| 1.133
| 12.75
| 28.78
| 3/0
| 1 inch 3/30
| 1.100
| 12.37
| 27.93
| 4/0
| 1 inch 2/30
| 1.066
| 12.00
| 27.09
| 5/0
| 1 inch 1/30
| 1.033
| 11.62
| 26.24
| 6/0
| 1 inch
| 1.000
| 11.25
| 25.39
| 7/0
| 29/30
| .966
| 10.87
| 24.55
| 8/0
| 28/30
| .933
| 10.50
| 23.70
| 9/0
| 27/30
| .900
| 10.12
| 22.85
| 10/0
| 26/30
| .866
| 9.75
| 22.01
| 11/0
| 25/30
| .833
| 9.37
| 21.16
| 12/0
| 24/30
| .800
| 9.00
| 20.31
| 13/0
| 23/30
| .766
| 8.62
| 19.47
| 14/0
| 22/30
| .733
| 8.25
| 18.62
| 15/0
| 21/30
| .700
| 7.87
| 17.77
| 16/0
| 20/30
| .666
| 7.50
| 16.93
| 17/0
| 19/30
| .633
| 7.12
| 16.08
| 18/0
| 18/30
| .600
| 6.75
| 15.23
| 19/0
| 17/30
| .566
| 6.37
| 14.39
| 20/0
| 16/30
| .533
| 6.00
| 13.54
| 21/0
| 15/30
| .500
| 5.62
| 12.69
| 22/0
| 14/30
| .466
| 5.25
| 11.85
| 23/0
| 13/30
| .433
| 4.87
| 11.00
| 24/0
| 12/30
| .400
| 4.50
| 10.15
| 25/0
| 11/30
| .366
| 4.12
| 9.31
| 26/0
| 10/30
| .333
| 3.75
| 8.46 |
|
发表于 2013-7-13 02:23
发表于 2013-7-13 08:50
