The ornamental design for a handheldinspectiondevice, as shown and described.
FIG. 1 is a front-right-top perspective view of a handheld inspection device embodying the new design;
FIG. 2 is a front-left-bottom perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines in the figures are shown for the purpose of illustrating portions of the handheld inspection device and/or environmental matter and form no part of the claimed design. The dot-dash broken lines define the bounds of the claimed design and form no part thereof.