These attic rulers are marked on both sides up to twenty inches in one inch increments. They are economical and install quickly and easily with staples.
Installing one or two of these rulers every couple of hundred square feet is helpful to both the inspector and the installer. Also, the homeowner can see, at a glance, that the insulation has been installed uniformly to the specified depth.
Attic rulers are sold by the case of 500 rulers.