thank for your answer but i dont undrestand it's impossible to multiply 5/8 with 100 or you multiply 0,625 with 100 ? i found 62,5 after what i am doing with this result ?
your link dont work if you put 1 5/8
i found 1 5/8 = 4,12 centimeter
but for 2 3/8 ?
is the map of tk409 is in a real size ?