Why are the UV objects scaled after "Project from view" I'm trying to texture an audio cassette, which is something I do for the first time.
When I select the faces where the texture should be applied on and then go for UV &gt; Project view then the unwrapped UV objects are scaled... What do I wrong?

Thanks for your help!
Here a bit more precisions on how UV scale works.
When you unwrapped you probably didn't load your image in the Image Texture node (in the Shader Editor), so by default it unwrapped at a 1:1 scale. As the selected image in the UV Editor is not 1:1, it appears stretched.
To make sure that the UV is proportional to the mesh, select the right Image Texture node in the Shader Editor, load the right image, then unwrap again.
Before (Image Texture node selected but no image loaded):

After (Image Texture node selected with image loaded):