It is possible to scale objects non-uniformly (i.e. having different X, Y and Z scale values), though this should be done with care as child slots inherit scaling from their parents. This can cause hard-to-debug issues where a visual component of a child slot displays strangely due to a non-uniformly scaled parent somewhere above in the hierarchy. The requirement for non-uniform scaling to achieve the desired look with primitive meshes (boxes, spheres, cones, quads etc.) can, and should, usually be avoided by instead changing the parameters of the respective mesh component.