Copy Scale Constraint

The Copy Scale constraint forces its owner to have the same scale as its target.


Here we talk of scale, not of size! Indeed, you can have two objects, one much bigger than the other, and yet both of them have the same scale. This is also true with bones: in Pose Mode, they all have a unitary scale when they are in rest position, represented by their visible length.



Copy Scale panel.

Data ID used to select the constraints target, and is not functional (red state) when it has none.
X, Y, Z
These buttons control along which axes the scale is constrained.
When enabled, this control allows the owner to be scaled (using its current transform properties), relatively to its target’s scale.
Standard conversion between spaces.