| 指圈 |
直径(MM) |
周长(MM) |
| 1.0 |
12.3 |
38.6 |
| 2.0 |
12.6 |
39.6 |
| 3.0 |
12.9 |
40.5 |
| 4.0 |
13.3 |
41.8 |
| 5.0 |
13.7 |
43.0 |
| 6.0 |
14.1 |
44.3 |
| 7.0 |
14.4 |
45.2 |
| 8.0 |
14.8 |
46.5 |
| 9.0 |
15.1 |
47.4 |
| 10.0 |
15.4 |
48.4 |
| 11.0 |
15.8 |
49.6 |
| 12.0 |
16.1 |
50.6 |
| 13.0 |
16.5 |
51.8 |
| 14.0 |
16.9 |
53.1 |
| 15.0 |
17.2 |
54.0 |
| 16.0 |
17.6 |
55.3 |
| 17.0 |
17.9 |
56.2 |
|
| 指圈 |
直径(MM) |
周长(MM) |
| 18.0 |
18.3 |
57.5 |
| 19.0 |
18.6 |
58.4 |
| 20.0 |
19.0 |
59.7 |
| 21.0 |
19.2 |
60.3 |
| 22.0 |
19.5 |
61.2 |
| 23.0 |
19.9 |
62.5 |
| 24.0 |
20.2 |
63.4 |
| 25.0 |
20.7 |
65.0 |
| 26.0 |
21.0 |
66.0 |
| 27.0 |
21.3 |
66.9 |
| 28.0 |
21.6 |
67.8 |
| 29.0 |
22.1 |
69.4 |
| 30.0 |
22.6 |
71.0 |
| 31.0 |
22.9 |
71.9 |
| 32.0 |
23.1 |
72.5 |
| 33.0 |
23.5 |
73.8 |
|