Real Size: Measure and Resize with Real World Units v1.0.2

Real Size is an editor tool that extends the Transform component inspector for all GameObjects. There’s no need to add extra components to your GameObjects, it just works! Add realistic dimensions to your objects, and keep your world's scale consistent!

Real Size calculates the bounds of a selected object, including or excluding its children. Bounds are color coded with their respective axis colors, and lengths are labeled conveniently in the scene view. Color and visibility settings are completely customizable.