FIG. 1 is a perspective view of a first embodiment of a pole arm showing our new design;

FIG. 2 is a front orthographic view thereof;

FIG. 3 is a rear orthographic view thereof;

FIG. 4 is a left side orthographic view thereof;

FIG. 5 is a right side orthographic view thereof;

FIG. 6 is a top orthographic view thereof;

FIG. 7 is a bottom orthographic view thereof;

FIG. 8 is a perspective view of a second embodiment of a pole arm showing our new design;

FIG. 9 is a front orthographic view thereof;

FIG. 10 is a rear orthographic view thereof;

FIG. 11 is a left side orthographic view thereof;

FIG. 12 is a right side orthographic view thereof;

FIG. 13 is a top orthographic view thereof; and,

FIG. 14 is a bottom orthographic view thereof.

The dotted lines in FIGS. 1-14 represent boundary lines between claimed and unclaimed subject matter, with the dotted lines themselves representing unclaimed subject matter. The dashed lines shown in FIGS. 1-14 are included for the purpose of illustrating environmental subject matter only and form no part of the claimed design.