In a recent magazine from San Francisco's Museum of Modern Art, there was an article about how all installations are planned with 1:24 scale models, right down to half scale recreations of all the art work. Apparently, the work is quite meticulous, and some of the artists who've had special exhibits have actually asked to keep some of the miniature versions of their pieces as mementos. Unfortunately, I cannot find the article online, but I did find this video about it, which I thought was quite interesting. https://www.bloomberg.com/news/videos/2016-04-07/design-in-miniature-san-francisco-moma Apologies if this has already been posted.