I am a bit confused about axis systems in Blender. In the first figure - the green and blue represent the Y and Z axis. When I translate the object in Y,Z directions it moves perfectly. However, when I change the object dimensions in Z direction it causes the object to change in the Y direction.
Also, in the first figure the dimensions in (Y,Z) are (725,2809) respectively - but obviously the extent of object in Y is much greater than in the Z direction. This makes me suspect that the dimensions are being shown in a coordinate system different from the one displayed on the screen. Any hints on how do I find it?
For sake of completeness - the airplane shown in the figure was imported as a .obj file. Since, it was composed a number of smaller meshes - I joined all these meshes into a single object and moved the geometry to origin. This is what is shown in figure 1.