Water tank testing device

Description

FIG. 1 is a top, front, right perspective view of a water tank testing device 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;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a bottom, rear, left perspective view thereof.

The broken lines in the drawings illustrate portions which form no part of the claimed design.

Claims

The ornamental design for a water tank testing device as shown and described.