The ornamental design for a rollergrillmonitoringdevice, as shown and described.
FIG. 1 is a perspective view of a roller grill monitoring device having a
weighted or widened base according to an embodiment of the present
invention;
FIG. 2 is a front view of the roller grill monitoring device showing the
clock face and signage area according to the embodiment of FIG. 1;
FIG. 3 is a rear view of the same roller grill monitoring device as shown
in FIG. 1;
FIG. 4 is a side view of the grill monitoring device according to the
embodiment of FIG. 1, illustrating the dial detached from the body; and,
FIG. 5 is a top view of the grill monitoring device according to the
embodiment of FIG. 1.