ios measure tape custom control
===

I want to build measuring tape custom control. It should be like one used in [Weightbot application][1]. 

Measuring tape is shown only partial on the screen, an by dragging you can pick from 0cm up to 1km.

One way i though of how to do it is to place a very long image in sliding UIImageView, but i sense there is a better way.

Any ideas how to implement this other than static image?

Thanks


  [1]: http://inspiredm.com/wp-content/uploads/2012/05/weightbot.png