Tabla de equivalencias para anillos

Diámetro interior   USA.     EUROPA
14.90 mm               4              7
15.30 mm               4.5           8
15.90 mm               5              10
16.20 mm               5.5           11
16.60 mm               6              12
16.90 mm               6.5           13
17.50 mm               7              15
17.80 mm               7.5           16
18.20 mm               8              17
18.80 mm               8.5           19
19.20 mm               9              20
19.50 mm               9.5           21
19.80 mm               10            22
20.40 mm               10.5         24
20.70 mm               11            25
21.10 mm               11.5         26
21.60 mm               12            28
22.00 mm               12.5         29
22.30 mm               13            30
22.60 mm               13.5         31
23.20 mm               14            33
23.60 mm               14.5         34
23.90 mm               15            35
24.20 mm               15.5         36
24.50 mm               16            37