The fourth kind of content you can create using the Rotating Content Tool is an automatic Progress Meter, which uses a progress bar to illustrate the amount of time that has progressed within a given time period.

When you create a Progress Meter, you are prompted for the start-date and end-date, and you can also choose from two different styles of progress bars. In addition, you can choose whether you want to use the progress bars hosted at r9tools.com, or whether you want to download the set of images and republish them to your own website: