FIG. 1 is a front perspective view of our new, original and ornamental design for a compact electric meter, according to a first embodiment;

FIG. 2 is a left side view of the meter of FIG. 1;

FIG. 3 is a back perspective view of the meter of FIG. 1;

FIG. 4 is a right side view of the meter of FIG. 1;

FIG. 5 is a front view of the meter of FIG. 1;

FIG. 6 is a bottom view of the meter of FIG. 1;

FIG. 7 is a back view of the meter of FIG. 1;

FIG. 8 is a top view of the meter of FIG. 1;

FIG. 9 is a front perspective view of our new, original and ornamental design for a compact electric meter, according to a second embodiment;

FIG. 10 is a left side view of the meter of FIG. 9;

FIG. 11 is a back perspective view of the meter of FIG. 9;

FIG. 12 is a right side view of the meter of FIG. 9;

FIG. 13 is a top view of the meter of FIG. 9;

FIG. 14 is a front view of the meter of FIG. 9;

FIG. 15 is a back view of the meter of FIG. 9;

FIG. 16 is a bottom view of the meter of FIG. 9;

FIG. 17 is a back perspective view of our new, original and ornamental design for a compact electric meter, according to a third embodiment;

FIG. 18 is a top view of the meter of FIG. 17;

FIG. 19 is a front view of the meter of FIG. 17;

FIG. 20 is a back view of the meter of FIG. 17;

FIG. 21 is a bottom view of the meter of FIG. 17;

FIG. 22 is a left side view of the meter of FIG. 17; and,

FIG. 23 is a right side view of the meter of FIG. 17.

The broken lines in the Figures are for illustrative purpses only and form no part of the claimed design.