How to cale a complete scene? For 3d printing and CFD

Hi!

I’m making my own real life project racer in Blender, and I’m closing in on the CFD part of the project. The problem is the complete scale of the scene is wrong, and the car is divided into multiple objects in order to ease the modification and testing of different pieces on different parts of the car.

So my question is, how to resize multiple objects so their relative distances remain?

Ok, had selected wrong transformation manipulator in object mode…