Centimeters to Inches Conversion

I just love a good design and this web site, which simply converts between metric and standard lengths, caught my eye.  You can enter millimeters, centimeters, inches or fractions of an inch and it will convert that number to the other fields.  But really cool part is the ruler and the red line that visually shows the length.

http://www.ginifab.com/feeds/cm_to_inch/