Surveying Instrument Accessory

FIG. 1 is a bottom perspective view of a surveying instrument accessory, showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof; and,

FIG. 5 is a rear view thereof.

Portions of the surveying instrument accessory shown in broken lines form no part of the claimed design. Unshaded portions of the surveying instrument accessory shown adjacent to solid lines form no part of the claimed design.