The ornamental design for a pair of picnictablerollers, as shown and described.
FIG. 1 is an environmental view of a pair of picnic table rollers showing a typical use of the pair, the pair including a right picnic table roller shown forward and a left picnic table roller shown aft;
FIG. 2 is a top view of a pair of picnic table rollers, the pair including a left picnic table roller and a right picnic table roller;
FIG. 3 is a bottom view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a front view of a right picnic table roller; and
FIG. 7 is a back view thereof;
FIG. 8 is a front view of a left picnic table roller;
FIG. 9 is a back view thereof; and,
FIG. 10 is an isometric view of a right picnic table roller. It is to be understood that the right picnic table roller depicted in FIG. 10 has a counterpart left picnic table roller, the view of which is a horizontal mirror image of the right picnic table roller that is depicted in FIG. 10.
The broken lines in the drawing depict environmental subject matter only and form no part of the claimed design.