Diagnostic device

FIG. 1 is a top, front, right perspective view of an embodiment of the claimed design;

FIG. 2 is a top, front, left perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a left elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings are for purposes of illustrating unclaimed portions of the design. Broken lines formed by equal length dashes show unclaimed portions of the design. Broken lines formed of unequal length dashes (i.e., dash-dot) show boundaries between claimed and unclaimed portions of the design. Symbolic break lines having a jagged element show that the no particular length of the portion is claimed, such lines and any portion of the article between such lines forming no part of the claimed design.