| US |
JP |
UK |
France |
Germany |
Switzerland |
mm |
inches |
| 3 |
4 |
F |
44 |
14 |
4 |
44 |
1.735 |
| 3.5 |
5 |
G |
45 1/4 |
14 1/2 |
5 1/4 |
45.2 |
1.79 |
| 4 |
7 |
H 1/2 |
46 1/2 |
15 |
7 1/4 |
46.5 |
1.835 |
| 4.5 |
8 |
I 1/2 |
47 3/4 |
15 1/4 |
8 3/4 |
47.8 |
1.89 |
| 5 |
9 |
J 1/2 |
50 |
15 3/4 |
9 1/2 |
49 |
1.943 |
| 5.5 |
11 |
L |
51 3/4 |
16 |
11 3/4 |
50.3 |
2 |
| 6 |
12 |
M |
52 3/4 |
16 1/2 |
12 3/4 |
51.5 |
2.045 |
| 6.5 |
13 |
N |
54 |
17 |
14 |
52.8 |
2.1 |
| 7 |
14 |
O |
55 1/4 |
17 1/4 |
15 1/4 |
54 |
2.15 |
| 7.5 |
15 |
P |
56 1/2 |
17 3/4 |
16 1/2 |
55.3 |
2.2 |
| 8 |
16 |
Q |
57 3/4 |
18 |
17 3/4 |
56.6 |
2.25 |
| 8.5 |
17 |
Q 1/2 |
58 1/2 |
18 1/2 |
18 1/2 |
57.8 |
2.3 |
| 9 |
18 |
S |
60 |
19 |
19 3/4 |
59.1 |
2.35 |
| 9.5 |
19 |
T |
61 1/2 |
19 1/2 |
21 |
60.3 |
2.4 |
| 10 |
20 |
T 1/2 |
62 1/4 |
20 |
22 |
61.6 |
2.46 |
| 10.5 |
22 |
U 1/2 |
63 |
20 1/4 |
23 1/4 |
62.8 |
2.51 |
| 11 |
23 |
V 1/2 |
64 1/2 |
20 3/4 |
24 |
64.1 |
2.56 |
| 11.5 |
24 |
X |
66 1/4 |
21 |
25 3/4 |
65.3 |
2.61 |
| 12 |
25 |
Y |
67 1/2 |
21 1/4 |
27 1/2 |
66.6 |
2.63 |
| 12.5 |
26 |
Z |
68 3/4 |
21 3/4 |
28 3/4 |
67.9 |
2.71 |
| 13 |
27 |
Z 1/2 |
70 |
22 |
29 1/4 |
69.1 |
2.76 |