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Oregon r & d tooling and design
At ABC Tool, our specialty is to meet and exceed all of your manufacturing needs with quality and serviceState-of-the-art tools and equipment for precision fabrication - tooling; die design, building, and maintenance; injection moldingOur equipment allows up to build your product to your most exacting specificationsWe are proud of the fabrication and machining work we have performed for our clientsOur creative and innovative team will design, build, and maintain your job in-house to your exact specificationsWe are proud to be affiliated with equipment and supply companies that provide us with the quality tools and materials we need to meet your needs
International Ring Size Conversion Chart:
Use this chart to convert your local standard to the US ring sizes for ordering.
U.S. Size
Diameter
in Inches
Diameter
in MM
Metric MM
Equivalent
British  
French  
German  
Japanese  
Swiss  
0000
.390
9.91
 
-
 
 
 
 
00
.422
10.72
 
-
 
 
 
 
0
.454
11.53
 
-
 
 
 
 
1/2
.474
11.95
 
A
 
 
 
 
3/4
.482
12.18
 
A 1/2
 
 
 
 
1
.487
12.37
38.9
B
 
 
1
 
1 1/4
-
12.60
39.6
B 1/2
 
 
 
 
1 1/2
.503
12.78
40.2
C
 
 
 
 
1 3/4
-
13.00
40.8
C 1/2
 
 
 
 
2
.520
13.21
41.5
D
41 1/2
13 1/2
2
1 1/2
2 1/4
-
13.41
42.1
D 1/2
-
-
 
 
2 1/2
.536
13.61
42.7
E
42 3/4
13 3/4
3
2 3/4
2 3/4
-
13.83
43.4
E 1/2
-
-
 
 
3
.553
14.05
44.0
F
44
14
4
4
3 1/8
-
14.15
44.3
F 1/2
-
-
 
 
3 1/4
-
14.25
44.6
-
-
-
 
 
3 3/8
-
14.36
44.9
G
45 1/4
-
5
5 1/4
3 1/2
.569
14.45
45.2
-
-
14 1/2
 
 
3 5/8
-
14.56
45.6
 G 1/2
-
 
6
 
3 3/4
-
14.65
45.9
H
46 1/2
 
 
6 1/2
4
.585
14.86
46.5
H 1/2
-
15
7
 
4 1/4
-
15.04
47.1
I  
47 3/4
 
 
7 3/4
4 1/2
.601
15.27
47.8
I 1/2
-
15 1/4
8
 
4 5/8
-
15.40
48.1
J
49
15 1/2
 
9
4 3/4
-
15.53
48.4
-
-
 
 
 
5
.618
15.70
49.0
J 1/2
-
15 3/4
9
 
5 1/8
-
15.80
49.3
K
50
 
 
10
5 1/4
-
15.90
49.6
-
-
 
 
 
5 3/8
-
16.0
50.0
K 1/2
-
 
10
 
5 1/2
.634
16.10
50.3
L
51 3/4
16
 
11 4
5 3/4
-
16.30
50.9
-
-
 
 
 
5 7/8
-
16.41
51.3
L 1/2
-
 
 
 
6
.650
16.51
51.5
M
52 3/4
16 1/2
12
12 4
6 1/4
-
16.71
52.2
M 1/2
-
 
 
 
6 1/2
.666
16.92
52.8
N
54
17
13
14
6 3/4
-
17.13
53.4
N 1/2
-
 
 
 
7
.683
17.35
54.0
O
55 1/4
17 1/4
14
15 4
7 1/4
-
17.45
54.7
O 1/2
-
 
 
 
7 1/2
.699
17.75
55.3
P
56 1/2
17 3/4
15
16 2
7 3/4
-
17.97
55.9
P 1/2
-
 
 
 
8
.716
18.19
56.6
Q
57 3/4
18
16
17 4
8 1/4
-
18.35
57.2
Q 1/2
-
 
 
 
8 1/2
.732
18.53
57.8
-
-
18 1/2
17
 
8 5/8
-
18.61
58.4
R
59
 
 
19
8 3/4
-
18.69
58.4
-
-
 
 
 
8 7/8
-
18.80
59.0
R 1/2
-
 
 
 
9
.748
18.89
59.1
-
-
19
18
 
9 1/8
-
19.10
59.4
S
60 1/4
 
 
20 4
9 1/4
-
19.22
59.7
-
-
 
 
 
9 3/8
-
19.31
60.0
S 1/2
-
 
 
 
9 1/2
.764
19.41
60.3
-
-
19 1/2
19
 
9 5/8
-
19.51
60.6
T
61 1/2
 
 
21 2
9 3/4
-
19.62
60.9
-
-
 
 
 
10
.781
19.84
61.6
T 1/2
-
20
20
 
10 1/4
-
20.02
62.2
U
62 3/4
 
21
22 4
10 1/2
.797
20.20
62.8
U 1/2
-
20 1/4
22
 
10 5/8
-
20.32
63.1
V
63
 
 
23 4
10 3/4
-
20.44
63.5
-
-
 
 
 
11
.814
20.68
64.1
V 1/2
-
20 3/4
23
 
11 1/8
-
20.76
64.3
W
65
 
 
25
11 1/4
-
20.85
64.7
-
-
 
 
 
11 3/8
-
20.94
65.0
W 1/2
-
 
 
 
11 1/2
-
21.08
65.3
-
-
21
24
 
11 5/8
.830
21.18
65.7
X
66 1/4
 
 
26 4
11 3/4
-
21.24
66.0
-
-
 
 
 
11 7/8
-
21.30
66.3
X 1/2
-
 
 
 
12
.846
21.49
66.6
Y
67 1/2
21 1/4
25
27 2
12 1/4
-
21.69
67.2
Y 1/2
-
 
 
 
12 1/2
.862
21.89
67.9
Z
68 3/4
21 3/4
26
28 4
12 3/4
-
22.10
68.5
Z 1/2
-
 
 
 
13
.879
22.33
69.1
-
-
22
27
 
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