Water heater thermostat wrench
FIG. 1 is a top front perspective view of a water heater thermostat wrench showing my new design; 
     FIG. 2 is a right side elevation view thereof, the left side elevation view being a mirror image; 
     FIG. 3 is a front elevation view thereof; 
     FIG. 4 is a top plan view thereof, the bottom plan view being unornamented; and, 
     FIG. 5 is a rear elevation view thereof.