Besides "ProgressBar", any other better tool?

Hi, all

In my application, I will get the "RSSI" value from a Serial Port, in order to know how big the value is, I want to make a progress bar with Minimum and Maximum set previously. So that when I get a new "RSSI" value I, user can get a clear impression how well is the "RSSI" value by its location of the progress bar...

It is just an idea...I want to ask is there any other better method to realize it

Thanks!