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Jérôme Bonnin


This article investigates a spherical sundial in the 'Palais Farnèse', Rome, questioning its Roman origin due to its perfect state of conservation and lack of gnomon hole. It hypothesises the dial is an 18th or 19th-century copy of a Roman original, potentially with a symbolic rather than functional purpose related to the palace's 'Trophées Farnèse' compositions about Time.
Dials: Scaphe, Dials: Unusual, Historical Dials, Restoration projects

This article details two 19th-century drawings by Charles Robert Cockerell of Greek sundials, possibly newly excavated. One depicts an unknown classical conical dial with "lion legs" and the other illustrates a rare planar, vertical east-facing dial from Delos, which later came to reside in the Louvre, recording significant ancient finds.
Dials: Unusual, Historical Dials

This article details a project to map over 500 excavated Greco-Roman sundials across the Roman Empire using GIS. It describes georeferencing historical maps, digitising province boundaries, and creating a database to display sundials by location, type, shape, and period, thereby analysing them in their geographic context.
Sundial Design & Layout, Historical Dials

This article explores the symbolic meanings of sundials in antiquity, drawing on literary and epigraphical evidence from the Greco-Roman world. It also introduces ancient timekeepers, including clepsydra and various types of horologia, and discusses the differences between Greek and Roman dials.
How Sundials Work, Historical Dials

This article investigates the presence and influence of Roman timekeepers in Britain from 43-780 AD, noting the scarcity of archaeological finds compared to other Roman provinces. It explores historical, cultural, and military evidence, including a mosaic depiction and rudimentary sundial objects, and briefly discusses the obscure origins of Saxon dials.
Dials: Mass Dials, Dials: Unusual, Historical Dials