Hi Michael,

thanks for your fast response!
I don't mean the 3d-view, I'm working in the top view with a isometric rendering as a background image from Cinema 4d to extract different dimensions out of the image.
In Cinema 4d it is not a funny thing to measure out some dimensions of an 1.8 GB FBX file. Now I fix it in Ps with copy and paste the dimension-PDF back to the redenring. It works fine for me.

With best regards,
Jörg