Butterfield Sundial

Butterfield-type sundials are characterized by their adjustable gnomons, metal flaps that cast a shadow on the dial’s face to indicate the hour, and geographical indices. This sundial has a scale adjustable between latitudes of 40° to 60° north. The latitudes of 26 European towns are engraved on its back for quick reference. With an intricately engraved silver face, it would have functioned as a fashionable traveler’s accessory.