I was recently helping a client decide between a wide full length mirror or a more slim to skinny full length mirror. The mirrors were almost identical in style and border, except for their width. I picked some of this ruler tape up from The Container Store and measured out both sizes on the closet wall so we could get a better idea of which one felt better in the space. Now you could also just use some painters tape and a ruler to do this but I liked not having to do all that extra work–plus this just looks cooler.