Rings
For rings that do not have an adjustable base, you will need to measure the inside diameter from one of your rings.
From the measurement you take you can use the table below to match to a size number.
Internal Diameter |
Inner circumference |
||
mm |
inches |
mm |
inches |
13,38 |
0,527 |
42 |
1,6540 |
13,69 |
0,539 |
43 |
1,6930 |
14,01 |
0,552 |
44 |
1,7320 |
14,33 |
0,534 |
45 |
1,7720 |
14,65 |
0,577 |
46 |
1,8110 |
14,97 |
0,589 |
47 |
1,8500 |
15,29 |
0,602 |
48 |
1,8900 |
15,61 |
0,614 |
49 |
1,9290 |
15,92 |
0,627 |
50 |
1,9690 |
16,24 |
0,639 |
51 |
2,0080 |
16,56 |
0,652 |
52 |
2,0470 |
16,88 |
0,665 |
53 |
2,0870 |
17,20 |
0,677 |
54 |
2,1230 |
17,52 |
0,690 |
55 |
2,1650 |
17,83 |
0,702 |
56 |
2,2050 |
18,15 |
0,715 |
57 |
2,2440 |
18,47 |
0,727 |
58 |
2,2830 |
18,79 |
0,740 |
59 |
2,3230 |
19,11 |
0,752 |
60 |
2,3620 |
19,43 |
0,765 |
61 |
2,4020 |
19,75 |
0,777 |
62 |
2,4410 |
20,06 |
0,790 |
63 |
2,4800 |
20,38 |
0,802 |
64 |
2,5200 |
20,70 |
0,815 |
65 |
2,5590 |
21,02 |
0,828 |
66 |
2,5980 |
21,34 |
0,840 |
67 |
2,6380 |
21,66 |
0,853 |
68 |
2,6770 |
21,97 |
0,865 |
69 |
2,7170 |
22,29 |
0,878 |
70 |
2,7560 |
22,61 |
0,890 |
71 |
2,7950 |
22,93 |
0,903 |
72 |
2,8350 |