Ring Sizer

Ring Sizer

 

U.S. & Canada

Inside

Diameter

Inside

Circumference

G. Britain

France

Germany

Japan

Switzerland

4

16mm

50mm

H-1/2

...

15

7

...

4-1/2

...

...

I-1/2

...

15-1/4

8

...

5

17mm

53mm

J-1/2

...

15-3/4

9

...

5-1/2

...

...

L

51-3/4

16

...

11-3/4

6

17.5mm

55mm

M

52-3/4

16-1/2

12

12-3/4

6-1/2

...

...

N

54

17

13

14

7

18mm

57mm

O

55-1/4

17-1/4

14

15-1/4

7-1/2

...

...

P

56-1/2

17-3/4

15

16-1/2

8

19mm

60mm

Q

57-3/4

18

16

17-3/4

8-1/2

...

...

...

...

18-1/2

17

...

9

20mm

63mm

...

...

19

18

...

9-1/2

...

...

...

...

19-1/2

19

...

10

21mm

66mm

T-1/2

...

20

20

...

10-1/2

...

...

U-1/2

...

20-1/4

22

...

11

21.5mm

68mm

V-1/2

...

20-3/4

23

...

11-1/2

...

...

...

...

21

24

...

12

22.5mm

71mm

Y

67-1/2

21-1/4

25

27-1/2

12-1/2

...

...

Z

68-3/4

21-3/4

26

28-3/4

13

23mm

73mm

...

...

22

27

...