OH! I see what you mean, in comparison to real life 2cm, would equal 1 pixel on the computer. Interesting way of scaling things, considering some helmets are as big as halflings But they look better that way so oh well (yeah mr saturn is like my idle)
This scale is supposed to be used for characters, not small items. If you read the FAQ thoroughly you will notice that there is written that small items can be drawn oversized for better visibility.