Variable grade level
FIG. 1 is a left, front perspective view of a variable grade level showing my new design; 
     FIG. 2 is a front elevational view thereof; 
     FIG. 3 is a rear elevational view thereof; 
     FIG. 4 is a left side elevational view thereof, the right side being a mirror image thereto. 
     The broken lines shown in FIG. 1 are not a part of the design sought to be patented and are included merely to show environmental structure.