`  ::The scale info was there when I showed up at WP, dunno its origin. Scale model is kind of short now, and discussion of matters related to its key adjective seems completely relevant, so I'd vote for that. (The ``ing``s should redir to it to I think - one could go the other way, but stylistically I prefer articles about objects to be about the objects rather than the process of creating them.) Note that scale (measurement) briefly mentions model scales, but it seems more like a disambigger than a content article.  `