The ornamental design for hair measuring assembly, as shown and described.
FIG. 1 is a front perspective view illustrating our inventive new design for a hair measuring assembly;
FIG. 2 is a front view thereof;
FIG. 3 is a left end view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right end view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a rear view thereof;
FIG. 8 is a rear perspective view illustrating our inventive new design for a hair measuring assembly; and,
FIG. 9 is a front view illustrating our inventive new design in an operative position, namely, with the handles depressed for use of the design, which differ from the illustrations of FIGS. 1 through 8.