戒指尺寸对照表:
号数(港码) 直径(mm) 周长(mm)
7--------------14.5--------------46.0
8--------------15.1--------------47.5
9--------------15.3--------------48.0
10-------------16.1--------------50.5
11-------------16.6--------------52.0
12-------------16.9--------------53.0
13-------------17.0--------------53.5
14-------------17.7--------------55.5
15-------------18.0--------------56.5
16-------------18.2--------------57.0
17-------------18.3--------------57.5
18-------------18.5--------------58.0
19-------------18.8--------------59.0
20-------------19.4--------------61.0
21-------------19.7--------------62.0
22-------------20.2--------------63.5
23-------------20.4--------------64.0
24-------------21.0--------------66.0