Answer:
Quadrant-shaped, carved ornament, similar to gadrooning. The term nulling refers to the carved or molded elements being hollowed out or significantly recessed, creating depth and shadow effects. This technique enhances the visual impact of the ornament and adds intricacy to the overall design.Similar to gadrooning, nulling quadrant-shaped ornaments are often used to embellish the edges or corners of architectural features, such as columns, pilasters, and cornices. They can also be found on furniture, where they add a decorative touch to table edges, cabinet doors, or chair rails.Gadrooning, on the other hand, typically features convex curves, resembling a series of parallel flutes or ridges. While both gadrooning and nulling quadrant-shaped ornaments offer repetitive patterns and decorative elements, the difference lies in their curvature; gadrooning is convex, while nulling quadrant-shaped ornaments are concave.