Signedon hour scale: Johannes Kooch fecit Holmiæ
FunctionThis compass sundial is a form of horizontal sundial that is not only portable but also adjustable for use at different latitudes. It was designed to sit near a window.
ProvenanceWebster, London, before 1930; Harrold E. Gillingham Collection, 1930 (inv. no. 72); David P. Wheatland, Topsfield, MA, 1949; gift to CHSI, c. 1985.
Published ReferencesEva Koleva Timothy, Lost in Learning: The Art of Discovery (Newburyport, MA: Athenaeum Publishing, 2010).