Rulers are great for straight line distances, but would a ruler be a goodchoice to measure the length of a river or road What if you are measuring adistance along roads from one city to another How would you measure curvedlines with a straight rulerUniverasl Desktop Ruler allows you to measure not only a straight linedistance but any curved distance on the Screen. It allows you to measurequickly and accurately distances, areas and perimeters of figures on thescreen. You can determine your own scale and get results in pixels and yourunits of measurement (feet, inches, meters, ...). It is useful for measuringdistance and area on a map, finding area and perimeter in a house projectfor example. Additionally it has a screen magnifier function.