Hollow (most probably spherical)
Spherical-cut dials--central gnomon point
Spherical-cut/quarter dis-shaped
Spherical-hemispherical--central gnomon point
Spherical-hemispherical--noncentral gnomon point
Spherical-hemispherical variant
Spherical-quarter spherical--central gnomon point
Spherical-roofed spherical
Spherical-spherical globe
Spherical-transposed hemispherical
show all