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Whipple Library

Department of History and Philosophy of Science
 
Ivory diptych sundial. A diptych dial consists of hinged tablets, and normally carries a horizontal dial, a vertical dial, and an equinoctial dial. Second half of the seventeenth century, French.
Alt Text: 
Ivory diptych sundial. A diptych dial consists of hinged tablets, and normally carries a horizontal dial, a vertical dial, and an equinoctial dial. Second half of the seventeenth century, French.
Title Text: 
ivory