Circumferential Length | Japan | Diameter | US | UK |
---|---|---|---|---|
40.8mm | #1 | 13mm | 1 | C |
41.9mm | #2 | 13.1/3 | 2 | D |
42.9mm | #3 | 13.2/3 | 2.1/2 | E |
44.0mm | #4 | 14mm | 3 | F |
45.0mm | #5 | 14.1/3 | 3.1/2 | G |
46.1mm | #6 | 14.2/3 | 3.2-4 | G-H |
47.1mm | #7 | 15 | 4.1/2 | H-I |
48.2mm | #8 | 15.1/3 | 4.1/2-5 | I-J |
49.2mm | #9 | 15.2/3 | 5 | J |
50.3mm | #10 | 16mm | 5.1/2 | K |
51.3mm | #11 | 16.1/3 | 6 | L |
52.4mm | #12 | 16.2/3 | 6.1/2 | L-M |
53.4mm | #13 | 17mm | 6.1/2-7 | M-N |
54.5mm | #14 | 17.1/3 | 7-7.1/2 | N-O |
55.5mm | #15 | 17.2/3 | 7.1/2-8 | O-P |
56.6mm | #16 | 18mm | 8 | P |
57.6mm | #17 | 18.1/3 | 8.1/2 | Q |
58.6mm | #18 | 18.2/3 | 9 | R |
59.7mm | #19 | 19mm | 9.1/2 | S |
60.7mm | #20 | 19.1/3 | 10 | T |
61.8mm | #21 | 19.2/3 | 10-10.1/2 | T-U |
62.8mm | #22 | 20mm | 10.1/2 | U |
63.9mm | #23 | 20.1/3 | 11 | V |
64.9mm | #24 | 20.2/3 | 11.1/2 | W |
66.0mm | #25 | 21mm | 12 | X |
67.0mm | #26 | 21.1/3 | 12.1/2 | Y |
68.0mm | #27 | 21.2/3 | 13 | Z |