The ornamental design for an indicatorgauge, as shown and described.
FIG. 1 is a perspective view of a front of an indicator gauge showing my new design;
FIG. 2 is a front side view of the indicator gauge of FIG. 1;
FIG. 3 is a right side view of the indicator gauge of FIG. 1;
FIG. 4 is a left side view of the indicator gauge of FIG. 1;
FIG. 5 is a top side view of the indicator gauge of FIG. 1;
FIG. 6 is a bottom side view of the indicator gauge of FIG. 1; and,
FIG. 7 is a rear side view of the indicator gauge of FIG. 1.
The broken line showing of portions of an indicator gauge is included for the purpose of illustrating environmental structure and forms no part of the claimed design.