House Beautiful recently supplied a list of 10 Must-Know Room Measurements in their October issue. Luckily, that list is also now online so I don't have to retype them all for you guys :) I'm actually not going to be sharing the whole list, but just those that I think apply to most people. These may sound silly, but I can assure you that sooo many rooms would look much better if only a few of these measurements were known. When picking out a dining room set, remember this... A 36-inch-wide rectangular table is perfect for conversation. A round table with a diameter of 48 inches seats six; a 60-inch round will handle eight standard dining chairs or 10 ballroom chairs. —Charlotte Moss. When looking for the right sized light fixture, remember this... How big should an overhead light fixture be? Just add the length and width of the room in feet, and whatever number you come up with is, in inches, your guide for the fixture's diameter. So a 15-by-20-foot room ...