Name/Title
Ivory DiptychEntry/Object ID
2023.4.6Description
Kelton Foundation notes: Bloud type ivory Diptych Dial. Dieppe, late 17th century, the upper outer face with circular equinoctial dial and central polar dial, upper inner face with latitude scale and pewter lunar volvelle, lower inner face with horizontal dial, printed paper compass rose, pewter elliptical hour scale, the base with inset pewter disc engraved with perpetual calendar square and calendar scaleCollection
Instruments CollectionLexicon
Nomenclature 4.0
Nomenclature Primary Object Term
SundialNomenclature Class
Timekeeping T&ENomenclature Category
Category 05: Tools & Equipment for Science & TechnologySearch Terms
diptych dial; sundial; compass