Oh whoops sorry Mike I thought you were asking for making those other apps go into Modo. You're talking about going from MoI into Strata though, right?

Most mesh formats do not have any way in them to label the unit system that they were created in, FBX is one that does though. So you might try FBX again with Strata.

Otherwise, it depends on the particular behavior of the specific app, maybe they have an option that you can set that will tell it what unit system the .obj file was in and sometimes they scale objects to what they figure is just a generic convenient size and you'll need to set an option to turn off that behavior to be able to get the size preserved at import time. I don't know the specifics about how Strata behaves in this regard.

- Michael