The ornamental design for an electronicinstrument, as shown.
FIG. 1 is a perspective view of an electronic instrument 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 left side elevational view thereof;
FIG. 5 is a rear plan view thereof; FIG. 6 is a top elevational view
thereof; and, FIG. 7 is a bottom elevational view thereof.