So if you're only roasting once or twice a year, we say skip buying a roasting pan and see if one of these alternatives will work for you instead. The big advantage of a roasting pan is that it's big, literally. A standard roasting pan can fit a 16-pound turkey with no problem. But many of us don't actually need to be roasting a 16-pound turkey, and a smaller turkey will fit quite easily in some of the cookware we already have.
The rule of thumb is that you want to be able to sit on your ball with your legs at a 90-degree angle or slightly more, but not less. Use these guidelines when you buy a fitness ball: If you are 4'11 - 5'4, get a ball that is 55cm. If you are 5'5 - 5'11, get a ball that is 65cm.
Things You'll Need. Using a Tape Measure. Set the ladder below and just to one side of the basketball rim. Climb the ladder and lay a yardstick across the rim so that there's an obvious midpoint on the yardstick from one side of the rim to the other. The diameter of a rim is 18 inches, so you can, for example, set the 3-inch mark on the yardstick on one side of the rim and the 21-inch mark on the other. The distance between the two marks must be 18 inches to ensure that you're measuring the diameter correctly.