This article discusses Ernest Beadsmoore's construction of a heliochronometer, inspired by Professor W. E. Cooke's 'New Sundial' design published in 1924. It details Beadsmoore's background as an engineer, his process of building and testing the dial, and its impact on local timekeeping precision. Cooke's later 'Sunclock' patent, connecting the dial to a clock for standard time, is also mentioned.
DIY Sundial Projects,
Dials: Heliochronometer,
Historical Dials,
Sundial Design & Layout