September 2012
Page 46

An Equatorial Sundial with EoT Adjustment: Update

This article provides an update on an equatorial sundial design with Equation of Time adjustment, originally published in 2009. The Mk.2 version incorporates improvements for public use, focusing on weather protection, increased strength, and enhanced vandal resistance, developed in response to the Austrian Sundial Society's plans to install a version.
Dials: Equatorial, Construction Projects, Equation of Time

Roger Bunce

June 2009
Page 24

An equatorial sundial with EoT adjustment

Details the design and construction of an equatorial sundial that directly indicates clock time (UTC). It incorporates a mechanical cam to automatically apply the Equation of Time correction, and includes adjustments for latitude and longitude. An appendix explains how to design the cam.
Construction Projects, Dials: Equatorial, Equation of Time, Sundial Design & Layout

Roger Bunce