The curve of the dialface is emphasized by a protruding lip. Two low-relief, oblong legs flank the base. Gibbs: The green and rusty gnomon now in place is probably not original. However, beneath the ring base of the present gnomon there is a hole which may have held the original gnomon. However, beneath the ring base of the present gnomon there is a hole which may have held the original gnomon. [...] Stylized legs in low relief flank the base. [...] Pope Benedict XIV restored the gnomon and fixed it in position.
This object has not been measured by the 3D pipeline. Its entry in the catalogue rests on the published description only; no surface fit, latitude or line detection exists for it.