We claim the ornamental design for a laboratory device, as shown and described.
FIG. 1 is a perspective view of a laboratory device according to a first embodiment of the present invention.
FIG. 2 is a front view of the laboratory device of FIG. 1.
FIG. 3 is a rear view of the laboratory device of FIG. 1.
FIG. 4 is a left-side view of the laboratory device of FIG. 1.
FIG. 5 is a right-side view of the laboratory device of FIG. 1.
FIG. 6 is an enlarged top view of the laboratory device of FIG. 1; and,
FIG. 7 is an enlarged bottom view of the laboratory device of FIG. 1.
The broken line showing in the figures is included for the purpose of illustrating portions of the laboratory device and form no part of the claimed design.