Overall: 1 x 8 3/4 x 8 3/4 in. ( 2.5 x 22.2 x 22.2 cm )
Octagonal copper sundial with numerous engraved inscriptions, including: "Noli confidere noctrem," "Equation/Table for/Regulating Clocks" and time markings; also inscribed in center: "Chr Colles/42 Pearl Strt." Eight circular piercings around exterior and rectangular piercing in upper center. Gnomon missing.
This sundial is marked by Christopher Colles, a native of Ireland who emigrated to America in 1771 and was a skilled engineer and inventor.
Due to ongoing research, information about this object is subject to change.