Edit Parameters Not Matched

I purchased a skybox and am moving it around over my property. I noticed something odd and wanted some information. I searched this forum and the knowledge base, but couldn't find an answer.

When I edit the skybox there are two sets of coordinates displayed: one in a small, black oval near the top of the screen (I'm not sure what that is called) and one in the build edit box. Those numbers are the same for everything else I've ever edited. However, for this skybox the numbers do not match. For example, if I set the height in the edit box for 250m, then height in the small black oval is 248.043. Why are these numbers different?

Thanks for any insight you can offer.

--Wissen

The numbers at the top of the screen will show the location of the object's geometric center. The numbers in the editor will show you the location of the object's root prim. Depending on how the object was built, the two sets of numbers might be the same, but they don't have to be.

Additonal tips:

Hold ctrl-shift, and the numbers at the top of the screen will show you the object's total size. The numbers for size in the editor show the size of the root prim.

Hold ctrl, and the numbers at the top will show the object's rotation. Rotation has to be based on the root prim's orientation, so in this case, the numbers at the top will match those in the editor.

Select two or more objects at once, hold ctrl-shift, and the top numbers will show the total size of the entire selection. The numbers in the editor will show the size of the root prim in the last object selected.

This is great information. Thanks, I appreciate it.

This also clears up one other mystery. I noticed that when I rotate the object the relative difference in the various parameters changes. That means that the root prim is at one side of the build so when I rotate it the X/Y numbers also change (it doesn't rotate about its center).

Now I feel a bit smarter, and that is always good.

--Wissen