摘要 |
An apparatus for comparing compliance of a grade to a predetermined slope includes a block and a level. The block has at least one notch positioned at a distance from a first end of the block such that when the method of this invention is practiced, a level indicator will indicate whether a grade on which the apparatus is resting matches a predetermined grade. A method of this invention includes the steps of inserting an arm of predetermined length into the notch and placing the joined block and arm on a grade. A level is placed at the arm to thereby compare compliance of the grade to a predetermine slope.
|