object
Ring dial
A named annular portable sundial read through a sliding hole on a graduated ring. Not a published nocturnal, not a diptych-dial, and not a bare ring dump.
Also known as Annular dial · Ring sundial
object
A named annular portable sundial read through a sliding hole on a graduated ring. Not a published nocturnal, not a diptych-dial, and not a bare ring dump.
Also known as Annular dial · Ring sundial