The ornamental design for an articulatingarm, as shown and described.
FIG. 1 is a front left perspective view of a portion of an articulating arm showing our new design;
FIG. 2 is a front top perspective view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a rear top perspective view thereof;
FIG. 6 is an enlarged partial view of area 6-6 of FIG. 2; and,
FIG. 7 is an enlarged partial view of area 7-7 of FIG. 5.
The dashed lines shown in FIGS. 1-7 are included for the purpose of illustrating environmental subject matter only and form no part of the claimed design. The dash-dot lines shown in FIGS. 1-7 show an unclaimed boundary between claimed and unclaimed subject matter. The bottom view of the portion of an articulating arm is omitted and forms no part of the claimed design.