Noun
English Wikipedia has an article on:scale modelWikipedia
scale model (plural scale models)
A three-dimensional copy or representation of something in which all parts have dimensions in the same proportion to that of the original.
If you think of a work of fiction as a kind of scale model of the world, then the positive valences - where things turn out better than you thought they would - ought to be in there somewhere, too. George Saunders
While I pride myself on trying to be creative in all areas of my life, I have occasionally gone overboard, like the time I decided to bring to a party a salad that I constructed, on a huge rattan platter, to look like a miniature scale model of the Gardens of Babylon. Gregory Maguire