The ornamental design for a staticelectricitymeasuringinstrument, as shown and described.
FIG. 1 is a perspective view of a static electricity measuring instrument;
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; and,
FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 2 thereof, in which the internal mechanism is omitted.
The broken lines depict portions of the static electricity measuring instrument in which the design is embodied that are not considered part of the claimed design.