Change Unity manipulator icon scale?

In maya you can scale the manipulators (move,scale,rotate), is there a way to do this in Unity?

maya scale example

Yes. Use Handles.ScaleHandle. Search the docs for it.

Like this:

static function ScaleHandle (scale : Vector3, position : Vector3, rotation : Quaternion, size : float) : Vector3

Put the function inside the function OnSceneGUI ().

Make sure you place the script in your Editor folder.

See more at: Unity - Scripting API: Handles.ScaleHandle