Abstract: Rules, including rulers, yardsticks, measuring tapes and the like which are marked along opposite edges with inch, half-inch, quarter-inch, eighth-inch and sixteenth-inch graduations. One edge having the one-sixteenth inch graduations in a color different from all the other graduation markings on that edge and sequentially numbered within each inch in the same different color. The other edge not having one-sixteenth inch graduations and the eighth-inch graduations being in a different color from all the other graduations on that side and preferably different from the color of the one-sixteenth inch graduations and sequentially numbered within each inch in the same different color.