We claim the ornamental design for a network test instrument, as shown and described.
FIG. 1 is a perspective view of the design for a network test instrument;
FIG. 2 is a front plan view of the design of FIG. 1;
FIG. 3 is a left side elevation view of the design of FIG. 1;
FIG. 4 is a right side elevation view of the design of FIG. 1;
FIG. 5 is a top elevation view of the design of FIG. 1;
FIG. 6 is a bottom elevation view of the design of FIG. 1; and,
FIG. 7 is a rear plan view of the design of FIG. 1.
The broken line showing of elements of the network test instrument are included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design.
Digital multimeter including a remote display, the body for the digital multimeter including a remote display, and the head for the digital multimeter including a remote display