Gids voor ringmaat
| binnenomtrek | binnen diameter | |||
| ring maat | mm | inches | mm | inches |
| 46 | 45,8 | 1,81'' | 14.6 | 0.57" |
| 48 | 48,2 | 1,89'' | 15.3 | 0.6" |
| 50 | 49,9 | 1,97'' | 15.9 | 0.62" |
| 52 | 52,1 | 2,04'' | 16.6 | 0.65" |
| 54 | 54,0 | 2,12'' | 17.2 | 0.68" |
| 56 | 55,9 | 2,2'' | 17.8 | 0.7" |
| 58 | 58,1 | 2,28'' | 18.5 | 0.73" |
| 60 | 60,0 | 2,36'' | 19.1 | 0.75" |
| 62 | 61,9 | 2,44'' | 19.7 | 0.78" |
| 64 | 64,1 | 2,52'' | 20.4 | 0.8" |
| 66 | 65,9 | 2,6'' | 21,0 | 0.82" |
| 68 | 68,1 | 2,67'' | 21.7 | 0.85" |
| 70 | 70,0 | 2,75'' | 22.3 | 0.88" |
| 72 | 71,9 | 2,83'' | 22.9 | 0.9" |
| 74 | 74,1 | 2,91'' | 23.6 | 0.93" |
| 76 | 76,0 | 2,99'' | 24.2 | 0.95" |
| 78 | 77,9 | 3,07'' | 24.8 | 0.97" |