The ornamental design for a handheldacousticimager, as shown and described.
FIG. 1 is a bottom, front and right side perspective view of a handheld acoustic imager showing our new design;
FIG. 2 is a top, rear and left side perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a right side elevation view thereof; and,
FIG. 8 is a left side elevation view thereof.
The features in broken lines are shown for the purpose of illustrating portions of the handheld acoustic imager that form no part of the claimed design.