Metal Detector

FIG. 1 is a right perspective view of a metal detector according to the design; FIG. 2 is a left perspective view thereof; FIG. 3 is a left perspective view thereof; FIG. 4 is a right perspective view thereof; FIG. 5 is an enlarged right perspective view thereof; FIG. 6 is an enlarged left perspective view thereof; FIG. 7 is an enlarged lower right perspective view thereof; FIG. 8 is an enlarged lower left perspective view thereof; FIG. 9 is an enlarged left perspective view thereof; FIG. 10 is an enlarged right perspective view thereof; FIG. 11 is an enlarged lower left perspective view thereof; FIG. 12 is an enlarged lower right perspective view thereof; FIG. 13 is a bottom view thereof; FIG. 14 is an enlarged right perspective view thereof; FIG. 15 is an enlarged left perspective view thereof; FIG. 16 is an enlarged lower right perspective view thereof; FIG. 17 is an enlarged lower left perspective view thereof; FIG. 18 is an enlarged left perspective view thereof; FIG. 19 is an enlarged right perspective view thereof; FIG. 20 is an enlarged lower left perspective view thereof; FIG. 21 is an enlarged lower right perspective view thereof; FIG. 22 is a right perspective collapsed view thereof; and, FIG. 23 is a right perspective collapsed view thereof. Any broken lines shown throughout these figures depict environmental subject matter only and form no part of the claimed design.