#1-#20 (JCS Japanese Standard) If you would like a size other than those listed, please contact us via CONTACT.
MIRROR POLISH
Please be careful not to drop or apply pressure to the surface or corners, as this may cause dents or deformation.
This product is made to order. After payment is confirmed, it will take about 2 months to produce and will be shipped as soon as it is completed.
Number,Circumference,Diameter List of ring sizes, inner circumferences, and inner diameters
Japan (JCS)
Japanese Standards (Number)
ID (mm)
Inner diameter (mm)
Circ. (mm)
Inner circumference (mm)
ISO
International Standards
USA
CAN
UK
AUS
NER
-3
11 2/3
36.6
-2
12
37.7
-1
12 1/3
38.7
0
12 2/3
39.8
1
13
40.8
41
1
C
2
13 1/3
41.9
42
2
D
3
13 2/3
42.9
43
2.5
E
Four
14
44.0
44
3
F
Five
14 1/3
45
45
3.5
G
6
14 2/3
46.1
46
3.5-4
G.H.
7
15
47.1
47
4-4.5
HI
8
15 1/3
48.2
48
4.5-5
IJ
9
15 2/3
49.2
49
Five
J
Ten
16
50.3
50
5.5
K
11
16 1/3
51.3
51
6
L
12
16 2/3
52.4
52
6.5
L.M.
13
17
53.4
53
6.5-7
M.N.
14
17 1/3
54.5
54
7-7.5
NO
15
17 2/3
55.5
55
7.5-8
OP
16
18
56.5
56
8
P
17
18 1/3
57.6
57
8.5
Q
18
18 2/3
58.6
58
9
R
19
19
59.7
59
9.5
S
20
19 1/3
60.7
60
Ten
T
twenty one
19 2/3
61.7
61
10-10.5
TU
twenty two
20
62.8
62
10.5
U
twenty three
20 1/3
63.8
63
11
V
twenty four
20 2/3
64.9
64
11.5
W
twenty five
twenty one
65.9
65
12
X
26
21 1/3
66.9
66
Y
27
21 2/3
68.0
67
Z
28
twenty two
69.0
68
29
22 1/3
70.1
69
30
22 2/3
71.1
70
(※ID= Inner Diameter Circ.=Inner Circumference ) Click here for ring gauge rental service
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