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Maurice Kenn
September 2010
Page 35
Page 35
This section contains two letters: Maurice J. Kenn congratulates Michael Maltin on his 'Novel Meridian Finder' and discusses the dipleidoscope; Roger Bowling queries if anyone has seen Haidinger’s brushes and the perception of polarised light.
How Sundials Work, Dialling Tools
March 2009
Page 13
Page 13
Maurice Kenn shares observations from Brisbane, Australia, contrasting the reliability of his universal equatorial 'coffee-time' sundial and heliochronometer with his UK radio-controlled clock. He notes the significant variation in local apparent noon relative to Eastern Standard Time in Brisbane.
Dials: Equatorial, Dials: Heliochronometer, How Sundials Work
March 2004
Page 32
Page 32
This is a review of the booklet "Time" by Silke Ackerman and Paul Buck. It praises the booklet's clear and concise presentation of time measurement, including sundials, stars, sand-glasses, water-clocks, and watches. The review highlights its appeal to young readers, inclusion of cut-out models for equatorial sundials and nocturnals, and the provided compass for orientation.
Book Reviews, DIY Sundial Projects
June 2002
Page 81
Page 81
Examines a rare compass designed by Harrison, with discussion of its function and potential sundial applications.
Dialling Tools, Dials: Portable
September 2001
Page 129
Page 129
This article discusses an inexpensive armillary sundial widely advertised as "Classic Art For Your Garden" but designed for Latitude 38° N. It explains how to modify such a dial for correct use in the UK (approx. 52° N) by tilting its main body or by physically removing and reattaching elements, enabling it to indicate local solar time.
DIY Sundial Projects, Dials: Equatorial
February 1999
Page 9
Page 9
This article references the Gibbs Universal Heliochronometer, patented in 1906, and its presence at the 1998 BSS Conference. It suggests converting existing Astro-Compasses into heliochronometers by adding self-adhesive hour-labels, providing an affordable way to indicate local sun time with reasonable accuracy.
Dialling Tools, DIY Sundial Projects, Dials: Heliochronometer
January 1997
Page 43
Page 43
Introduces creative sundial designs employing unconventional concepts. Encourages innovation in form and function while respecting core gnomonic principles.
Dials: Unusual
June 1996
Page 22
Page 22
A personal travelogue documenting sundials discovered in Canada, Australia, and Singapore, including armillary and equatorial dials, with notes on design inspiration and memorial contexts.
Dials: Equatorial
October 1995
Page 27
Page 27
A technical and descriptive account of a large equatorial sundial made from translucent materials, designed for broad geographic usability and visual impact, including discussion of its structure and application.
Dials: Equatorial, Dials: Unusual
June 1994
Page 37
Page 37
This article presents the design and construction of a large equatorial sundial made with translucent materials. The dial is universal, meaning it can be used at any latitude, and is designed to be both decorative and scientifically accurate. Its practical applications and display potential are discussed.
DIY Sundial Projects, Dials: Equatorial
February 1992
Page 23
Page 23
This article highlights the useful adoption of sundials for navigation in the 20th century, particularly in situations where magnetic compasses were unreliable. It cites examples like Admiral Byrd's "Sun Compass" for polar flights and the "Astro-Compass" used in RAF aircraft during WWII. It also mentions Brigadier Ralph A. Bagnold's "Sun-Compass" for desert exploration and Gerald Dunn's "Cruiserfix" for yachtsmen, demonstrating the sundial's value as a navigation tool.
Dials: Portable
October 1991
Page 33
Page 33
Maurice Kern describes his simple, legible sundial made from commonplace materials, featuring a translucent semi-cylindrical dial and a conventional gnomon. Designed for readability from multiple angles, it indicates solar time and can be adjusted for local mean time or summer time using the Equation of Time, highlighting a frustration with complex and indistinct conventional dials.
Dials: Equatorial, Dials: Unusual, Sundial Design & Layout, DIY Sundial Projects