FIG. 1 is a front perspective view of the gas monitoring device.
FIG. 2 is a front view thereof.
FIG. 3 is a back perspective view thereof.
FIG. 4 is a left side view thereof.
FIG. 5 is a right side view thereof; and,
FIG. 6 is a top view thereof.
The broken lines shown in the Figures show portions of the gas monitoring device that form no part of the claimed design.
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