The ornamental design for a watthourmeterblock with safety shield, as shown and described.
FIG. 1 is a perspective view of a watthour meter block with safety shield;
FIG. 2 is a front view of the watthour meter block with safety shield;
FIG. 3 is a rear view of the watthour meter block with safety shield;
FIG. 4 is a side view of the watthour meter block with safety shield;
FIG. 5 is a side view of the watthour meter block with safety shield;
FIG. 6 is a top view of the watthour meter block with safety shield; and,
FIG. 7 is a bottom view of the watthour meter block with safety shield.
The broken lines in the Figures are directed to unclaimed subject matter of the watthour meter block with safety shield, and are directed toward the environment for illustrative purposes only; in both instances, the broken lines form no part of the claimed design.