Change unit scale

After modeling for a while, I finally figured out how to change the unit scale so that 1 internal unit = 1 inch, which allows greater precision to be preserved in models using Imperial measurements.

Unfortunately, I'd been working on the model for days already, and have other old models I'd also like to convert.

Please add a mechanism to change the unit scale and apply the change globally . That doesn't mean changing object scale, it means changing all position data, object translations, as well as all modifier values that are distance units, view clipping distances, etc.