The ornamental design for a bridge for a musicalinstrument, as shown and described.
FIG. 1 is a reduced top and side perspective view of a bridge for a musical instrument embodying my new design, said drawing showing the bridge and the string anchoring device, the broken lines shown are for environmental purposes only and form no part of my invention;
FIG. 2 is a top perspective view of a bridge thereof for a musical instrument;
FIG. 3 is a top perspective view of a bridge thereof, the movable elements are shown in alternate positions;
FIG. 4 is a top view of the device as shown in FIG. 2 thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a rear view thereof;
FIG. 7 is a right side elevavtional view; and,
FIG. 8 is the bottom view of the device as shown in FIG. 2 thereof.