These measuring tools are great for measuring blueprints, drawings, maps, and any object on a flat surface. Most of these tools, you simply trace the perimeter of the object you're wanting to measure with the wheel, and the tool calculates the traced distance. Some of these tools you set the scale of your drawing and then begin tracing the object you want to measure. Some of them will give you an area calculation if the area is a square or rectangle, but if you're wanting to measure an irregular shape like that of a peanut-shaped swimming pool, or golf course bunker, you should consider a Planimeter instead. Check out our selection of Planimeters under the Planimeter Category.