Ring sizes
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Portugal |
EU |
UK |
Diameter in mms |
Perimeter in mms |
| 8 | 48 | I | 15,3 | 50 |
| 9 | 49 | J | 15,7 | 51 |
| 10 | 50 | K | 16 | 52 |
| 11 | 51 | L | 16,3 | 53 |
| 12 | 52 | L1/2 | 16,7 | 54 |
| 13 | 53 | M1/2 | 17 | 55 |
| 14 | 54 | N1/2 | 17,3 | 56 |
| 15 | 55 | O | 17,7 | 57 |
| 16 | 56 | P | 18 | 58 |
| 17 | 57 | Q | 18,3 | 59 |
| 18 | 58 | Q1/2 | 18,7 | 60 |
| 19 | 59 | R | 19 | 61 |
| 20 | 60 | S | 19,3 | 62 |
| 21 | 61 | S1/2 | 19,7 | 63 |
| 22 | 62 | T1/2 | 20 | 64 |
| 23 | 63 | U | 20,3 | 65 |
| 24 | 64 | V | 20,7 | 66 |
| 25 | 65 | W | 21 | 67 |
| 26 | 66 | W1/2 | 21,3 | 68 |
| 27 | 67 | X1/2 | 21,7 | 69 |
| 28 | 68 | Y | 22 | 70 |
| 29 | 69 | Z1/2 | 22,3 | 71 |
| 30 | 70 | 22,7 | 72 |
