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COMPARATIVE RING-SIZE EQUIVALENTS

U.S.

 I.D.(Inches) British French German Japanese Swiss
0 .454 ** ** ** ** **
1/2 ** A ** ** ** **
3/4 ** A-1/2 ** ** ** **
1 .487 B ** ** 1 **
1 1/4 ** B-1/2 ** ** ** **
1 1/2 .503 C ** ** ** **
1 3/4 ** C-1/2 ** ** ** **
2 .520 D 41 1/2 13 1/4 2 1 1/2
2 1/4 ** D-1/2 ** ** ** **
2 1/2 .536 E 42 3/4 13 3/4 3 2 3/4
2 3/4 ** E-1/2 ** ** ** **
3 .553 F 44 14 4 4
3 1/8 ** F-1/2 ** ** ** **
3 3/8 ** G 45 1/4 ** 5 5 1/4
3 1/2 .569 ** ** 14 1/2 ** **
3 5/8 ** G-1/2 ** ** 6 **
3 3/4 ** H 46 1/2 ** ** 6 1/2
4 .585 H-1/2 ** 15 7 **
4 1/4 ** I 47 3/4 ** ** 7 3/4
4 1/2 .601 I-1/2 ** 15 1/4 8 **
4 7/8 ** J 49 ** ** 9
5 .618 J-1/2 ** 15 3/4 9 **
5 1/8 ** K 50 ** ** 10
5 3/8 ** K-1/2 ** ** 10 **
5 1/2 .634 L 51 3/4 16 ** 11 3/4
5 7/8 ** L-1/2 ** ** 11 **
6 .650 M 52 3/4 16 1/2 12 12 3/4
6 1/4 ** M-1/2 ** ** ** **
6 1/2 .666 N 54 17 13 14
6 3/4 ** N-1/2 ** ** ** **
7 .683 O 55 1/4 17 1/4 14 15 1/4
7 1/4 ** O-1/2 ** ** ** **
7 1/2 .699 P 56 1/2 17 3/4 15 16 1/2
7 3/4 ** P-1/2 ** ** ** **
8 .716 Q 57 3/4 18 16 17 3/4
8 1/4 ** Q-1/2 ** ** ** **
8 1/2 .732 ** ** 18 1/2 17 **
8 5/8 ** R 59 ** ** 19
8 7/8 ** R-1/2 ** ** ** **
9 .748 ** ** 19 18 **
9 1/8 ** S 60 1/4 ** ** 20 1/4
9 3/8 ** S-1/2 ** ** ** 20 1/2
9 1/2 .764 ** ** 19 1/2 19 **
9 5/8 ** T 61 1/2 ** ** 21 1/2
10 .781 T-1/2 ** 20 20 **
10 1/4 ** U 62 3/4 ** 21 22 3/4
10 1/2 .797 U-1/2 ** 20 1/4 22 **
10 5/8 ** V 63 3/4 ** ** 23 3/4
11 .814 V-1/2 ** 20 3/4 23 **
11 1/8 ** W 65 ** ** 25
11 3/8 ** W-1/2 ** ** ** **
11 1/2 .830 ** ** 21 24 **
11 5/8 ** X 66 1/4 ** ** 26 1/4
11 7/8 ** X-1/2 ** ** ** **
12 .846 Y 67 1/2 21 1/4 25 27 1/2
12 1/4 ** Y-1/2 ** ** ** **
12 1/2 .862 Z 68 3/4 21 3/4 26 28 3/4
12 3/4 ** Z-1/2 ** ** ** **
13 .879 ** ** 22 27 **
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