Ligne Sizes Defined

20 Ligne = 1/2″ dia. = 12.700 MM

25 Ligne = 5/8″ dia. = 15.875 MM

30 Ligne = 3/4″ dia. = 19.050 MM

35 Ligne = 7/8″ dia. = 22.225 MM

40 Ligne = 1″ dia. = 25.400 MM

45 Ligne = 1-1/8″ dia. = 28.58 MM