I remember this big wooden contraption you would put your feet in with a pair of shoes which showed how well they fit.......how many people today have cancer because of the same.
http://gizmodo.com/the-insane-cancer-machines-that-used-to-live-in-shoe-st-789073694
http://gizmodo.com/the-insane-cancer-machines-that-used-to-live-in-shoe-st-789073694