I don't know, I find that 'parsing' a nice big "57" in the middle of my dash board and working out how much over 55 that is a lot quicker and easier than trying

I don't know, I find that 'parsing' a nice big "57" in the middle of my dash board and working out how much over 55 that is a lot quicker and easier than trying to estimate how far an arrow is between two number printed in a much smaller font.