FIG. 1 is a perspective view of a first embodiment of a network test instrument case showing our new design;

FIG. 2 is a front plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear plan view thereof;

FIG. 5 is a top elevational view thereof;

FIG. 6 is a bottom elevational view thereof;

FIG. 7 is a perspective view of a second embodiment of network test instrument case showing our new design;

FIG. 8 is a front plan view thereof;

FIG. 9 is a right side elevational view thereof;

FIG. 10 is a rear plan view thereof;

FIG. 11 is a top elevational view thereof; and,

FIG. 12 is a bottom elevational view thereof.

The broken line showing is for illustrative purposes only and forms no part of the claimed design.