The ornamental design for an medicalinstrument for measuringelectrocardiogram, as shown and described.
FIG. 1 is a perspective view of an medical instrument for measuring electrocardiogram showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is another perspective view thereof;
FIG. 9 is another perspective view thereof as shown in an environment of use; and,
FIG. 10 is an enlarged view of the encircled area shown in FIG. 1.
The short dash-dash broken lines in the figures show portions of the medical device and the dot-dot-dash broken lines in FIG. 1 and FIG. 10 encircling a portion of the medical instrument for measuring electrocardiogram are for illustrating the enlargement; the broken lines form no part of the claimed design.