User\'s Guide
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Selecting a ring reducer:
Choose a size (curvature):
Set-up
Enlarge again a reduced ring:
Bonding with glue |
|
Conversion chart for ring sizes |
||||
|
Inside diameter |
Circumference mm |
Europe |
UK |
USA |
|
15.28 |
48.00 |
8.00 |
|
|
|
15.30 |
48.07 |
8.07 |
I½ |
|
|
15.48 |
48.63 |
8.63 |
|
4¾ |
|
15.50 |
48.69 |
8.69 |
J |
|
|
15.60 |
49.00 |
9.00 |
|
|
|
15.70 |
49.32 |
9.32 |
J½ |
5 |
|
15.90 |
49.95 |
9.95 |
K |
5¼ |
|
15.92 |
50.00 |
10.00 |
|
|
|
16.10 |
50.58 |
10.58 |
K½ |
5½ |
|
16.23 |
51.00 |
11.00 |
|
|
|
16.31 |
51.24 |
11.24 |
L |
5¾ |
|
16.51 |
51.87 |
11.87 |
L½ |
6 |
|
16.55 |
52.00 |
12.00 |
|
|
|
16.70 |
52.46 |
12.46 |
M |
|
|
16.73 |
52.56 |
12.56 |
|
6¼ |
|
16.87 |
53.00 |
13.00 |
|
|
|
16.90 |
53.09 |
13.09 |
M½ |
|
|
16.92 |
53.16 |
13.16 |
|
6½ |
|
17.10 |
53.72 |
13.72 |
N |
|
|
17.14 |
53.85 |
13.85 |
|
6¾ |
|
17.19 |
54.00 |
14.00 |
|
|
|
17.30 |
54.35 |
14.35 |
N½ |
|
|
17.35 |
54.51 |
14.51 |
|
7 |
|
17.50 |
54.98 |
14.98 |
O |
|
|
17.56 |
55.00 |
15.00 |
|
7¼ |
|
17.70 |
55.61 |
15.61 |
O½ |
|
|
17¾ |
55.76 |
15.76 |
|
7½ |
|
17.83 |
56.00 |
16.00 |
|
|
|
17.90 |
56.23 |
16.23 |
P |
|
|
17.97 |
56.45 |
16.45 |
|
7¾ |
|
18.10 |
56.86 |
16.86 |
P½ |
|
|
18.14 |
57.00 |
17.00 |
|
|
|
18.19 |
57.15 |
17.15 |
|
8 |
|
18.30 |
57.49 |
17.49 |
Q |
|
|
18.39 |
57.77 |
17.77 |
|
8¼ |
|
18.46 |
58.00 |
18.00 |
|
|
|
18.50 |
58.12 |
18.12 |
Q½ |
|
|
18.59 |
58.40 |
18.40 |
|
8½ |
|
18.70 |
85.75 |
18.75 |
R |
|
|
18.78 |
59.00 |
19.00 |
|
8¾ |
|
18.90 |
59.38 |
19.38 |
R½ |
|
|
18.99 |
59.66 |
19.66 |
|
9 |
|
19.10 |
60.00 |
20.00 |
S |
|
|
19.22 |
60.38 |
20.38 |
|
9¼ |
|
19.30 |
60.63 |
20.63 |
S½ |
|
|
19.41 |
60.98 |
20.98 |
|
9½ |
|
19.42 |
61.00 |
21.00 |
|
|
|
19.50 |
61.26 |
21.26 |
T |
|
|
19.63 |
61.67 |
21.67 |
|
9¾ |
|
19.70 |
61.89 |
21.89 |
T½ |
|
|
19.74 |
62.00 |
22.00 |
|
|




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