Size of exported collada-file

[cotty]

I have exported some models for 3d-printing, some of them worked fine and some models have a wrong size. Is there a possibility to check or better define the size of a exported collada-file? An export as STL worked well in all cases without any changes of the model.
Thank you for any helpful hints!

[TIG]

A Collada files XYZs are in inches... BUT near the beginning it defines the units - e.g. 'meter=' and a conversion factor to make the inches into those ?
Read it in a plain-text editor like Notepad++.exe........

[cotty]

Yes, and the line is correct: <unit meter="0.02539999969303608" name="inch" />

but I tried some more exports and moved around the geometry to see which entries in the collada-file changed. One line (perhaps something like the origin of the group?) had very small values in the original file:

<matrix>2.775557561562893e-015 -1 0 2.314960629921188 1 2.775557561562893e-015 0 -7.105427357595022e-015 -0 0 1 -2.775557561561001e-017 0 0 0 1</matrix>

and changed to:

<matrix>1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1</matrix>

after moving the group around and back to the origin. So I think the problem was not the geometry itself but the position of the group relative to the origin?!