Scaling 16bit to 8bit image

Discussion created by desc0107 on Feb 12, 2011
I am trying to scale a 16bit image to an 8bit image inside a Model.  My best guess is that needs to be done in raster calculator using a formula similar to below. 

rescaled grid = (grid - min value from grid) * max scale value / (max value from grid - min value from grid) + min scale value

How would I do this inside Model Builder?  Any feedback would be appreciated.