Tabella delle misure degli anelli
| La dimensione dell'anello | Diametro interno dell'anello in mm | Circonferenza interna dell'anello in mm |
| 1 | 12.67 | 39,80 |
| 2 | 13.00 | 40.84 |
| 3 | 13.33 | 41,88 |
| 4 | 13.67 | 42,95 |
| 5 | 14.00 | 43,98 |
| 6 | 14.33 | 45.02 |
| 7 | 14.67 | 46.09 |
| 8 | 15.00 | 47.12 |
| 9 | 15.33 | 48.16 |
| 10 | 15.67 | 49.23 |
| 11 | 16.00 | 50.27 |
| 12 | 16.33 | 51.30 |
| 13 | 16.67 | 52.37 |
| 14 | 17.00 | 53.41 |
| 15 | 17.33 | 54.44 |
| 16 | 17.67 | 55.51 |
| 17 | 18.00 | 56.55 |
| 18 | 18.33 | 57.59 |
| 19 | 18.67 | 58,65 |
| 20 | 19.00 | 59,69 |
| 21 | 19.33 | 60.73 |
| 22 | 19.67 | 61,80 |
| 23 | 20.00 | 62,83 |
| 24 | 20.33 | 63,87 |
| 25 | 20.67 | 64,94 |
| 26 | 21.00 | 65,97 |
| 27 | 21.33 | 67.01 |
| 28 | 21.67 | 68.08 |
| 29 | 22.00 | 69.12 |
| 30 | 22.33 | 70.15 |
| 31 | 22.67 | 71.22 |
| 32 | 23.00 | 72.26 |
| 33 | 23.33 | 73.29 |