The ornamental design for height measuring device, as shown and described.
FIG. 1 is a front elevational view of a height measuring device showing my
new design;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a partial top-left perspective view of FIG. 1 on an enlarged
scale; and
FIG. 5 is a top and right perspective view of the movable measure bar on an
enlarged scale, the base/support unit being omitted for ease of
illustration.