The ornamental design for a sportsnetheightgauge, substantially as shown and described.
FIG. 1 is a top, front and side perspective view of a sports net height
gauge showing my new design in a multi-folded condition for ease of
illustration;
FIG. 2 is a front elevational view thereof in the extended position on a
reduced scale;
FIG. 3 is a rear elevational view thereof in the extended position on a
reduced scale;