March 2014
Page 26

A World Sunclock

This article describes the author's construction of a brass and stainless steel sun clock based on principles defined by Sir Alan Patrick Herbert. The instrument features two dials (World and outer) and enables precise adjustments for latitude, longitude, and Equation of Time.

Michael Lee

March 2009
Page 10

A Moondial for the Northern Hemisphere

This article details the design and construction of a mechanical moondial for the Northern Hemisphere. It explains the components, materials used and the intricate etching process for the dial plate. The article also provides instructions for setting up the instrument, determining the moon's phase using Golden Numbers, and calculating time by the moon's apparent direction.
Sundial Design & Layout, Construction Projects, DIY Sundial Projects

Michael Lee

December 2009
Page 28

A universal heliochronometer

Details the design and construction of a modern, portable heliochronometer. The instrument, inspired by H.C. Armstead's 'Phoeboscope', uses a spot of light on an analemma to provide a numerical time readout. It can be adjusted for latitude, longitude, the equation of time, and summer time.
Construction Projects, Dials: Heliochronometer, Equation of Time

Michael Lee