 the distance from the top step, or landing, to the top surface
of the bottom step (see Distance A in figure 1). The method for
obtaining this measurement is described below
 the distance from the tip of the top step to the tip of the
bottom step (see Distance B in Figure 1)
To find the length of Distance A, place a long level on the stoop
and hold it out over the steps. Once you have evened the level, take
a tape measure and measure the distance from the under side of the
level to the surface of the bottom step. If your steps are longer
than the length of your level, you can take multiple readings down
the step and then add the results together to find the total drop of
Distance A. If you are only looking for general degree, and accuracy
is not important, you can find the drop of a few steps then measure
the distance of the tip of the top step you placed the level on to
the tip of the step to which you measured.

FIGURE 1
