This scale consists of large numbers printed on a bright yellow, non-glare tape stock. The nonpermanent adhesive tape can be placed on a variety of surfaces, such as the flat surfaces of painted walls, automobiles, windows, etc., and then removed without surface damage. Each roll is 30 feet long and 1 1/4 inch wide. The pattern of 12 inches repeats itself with alternating black bands on every other foot length. The purpose of the alternating black band is for distance photography. Even if you cannot read the numbers in the scale at this long distance, you should be able to see the black bars, therefore you would know the approximate measurement in feet.