object
Diptych dial
A named hinged two-leaf portable sundial with string gnomon between faces. Not the writing diptych tablet, not a ring-dial, and not a published sundial plate alone.
Also known as Diptych sundial · Folding sundial
object
A named hinged two-leaf portable sundial with string gnomon between faces. Not the writing diptych tablet, not a ring-dial, and not a published sundial plate alone.
Also known as Diptych sundial · Folding sundial