September 2022
Page 2

Thomas Wright’s Horizontal Dials: An Update

Updates the known catalogue of 18th-century mathematical instrument maker Thomas Wright’s horizontal dials, increasing the count to 27. Provides details, metallurgy, and provenance for recently examined examples, including the Old Warden dial, the Wrexham dial, and the Lisbon College dial (now at Ushaw College).
Dials: Horizontal, Equation of Time, Historical Dials, Restoration projects

John Davis
Darius Panahy