Nurnberg diptych sundial from capable of operating between 42 and 54 degrees of latitude. The brass insert is a mystery: Possibly an annalematic sundial to allow orientation without compass. Currently in Louvre.
rare century Gold sundial and compass ring, possibly German. The hinged oval bezel designed as a seal and engraved with a coat of arms, opening to reveal a sundial and compass, on a plain gold hoop, dimensions of bezel