The ornamental design for a device or instrument for medical diagnostics, as shown and described.
The patent file contains at least one drawing executed in color. Copies of this patent with color drawings will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front perspective view of a device or instrument for medical diagnostics showing our new design.
FIG. 2 is a side elevation view of a device or instrument for medical diagnostics showing our new design; and,
FIG. 3 is a front elevation view of a device or instrument for medical diagnostics showing our new design.
The broken lines in the figures represent a device or instrument for medical diagnostics and illustrate environment only. The broken lines form no part of the claimed design.