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  5. February 1994

February 1994

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Page 2
Editorial discussing international sundial publications, restoration challenges, multilingual gnomonic vocabulary, and reports from Roumania and Sarajevo.
Restoration projects, The BSS and Members

Page 3
In-depth examination of historical ivory diptych sundials, particularly from Nuremberg and Dieppe, their markings, functions, and astrological and calendrical components.
Dials: Portable, Historical Dials

Page 8
Describes a method using stereographic projection to determine true north and latitude from solar shadow observations. Includes theoretical explanation and practical setup.
How Sundials Work, Mathematics of Dialling

Page 9
Survey of artistic representations of sundials across centuries, evaluating their accuracy, symbolism, and evolution, with references to works by Holbein and others.
Historical Dials

Page 17
Explores the history, theory, and military use of sun compasses, including detailed designs used by British forces and analogies with sundial mechanics.
Dials: Portable, Mathematics of Dialling

Page 22
Provides a geometric technique to design a sundial based on three shadow measurements. Practical, educational, and includes construction guidance.
DIY Sundial Projects, Mathematics of Dialling

Page 24
Historical document listing time differences across Spanish cities for calendrical correction and dial calibration, translated and annotated.
Equation of Time

Page 28
Analysis of sundials and astronomical instruments in Holbein’s painting 'The Ambassadors', with insights into symbolism, usage, and historical context.
Historical Dials

Page 30
Further elaboration on the Equation of Time and the analemma's form, including seasonal impacts on sundial accuracy and diagrammatic explanation.
Equation of Time

Page 32
Discusses the lunar equivalent of the solar Equation of Time and its practical application for estimating time by moonlight.
Equation of Time

Page 33
Describes construction of eccentric sundials with non-standard hour lines and geometries. Focuses on design theory and practical outcomes.
Dials: Unusual, Mathematics of Dialling

Page 35
Addresses deterioration of stone materials used in sundials and buildings. Covers environmental impacts, stone types, and conservation strategies.
Restoration projects

Page 37
Short summaries of a BSS meeting and updates from the Canadian Sundial Society.
The BSS and Members

Page 38
Historic timekeeping tables by Derham related to mechanical watches and their relationship to solar time.
Equation of Time

Page 41
Reviews of two books, one English and one Polish, covering sundial design and history.
Book Reviews

Page 42
Biographical summary of Nicholas Kratzer, a notable early 16th-century diallist and scientific advisor to Henry VIII.
Historical Dials, The BSS and Members

Page 44
Announcement of a commemorative sundial plate issued by the National Trust for Scotland.
Dials: Horizontal

Page 45
Introduction to a new series of colour postcards issued by the BSS featuring diverse sundials.
The BSS and Members

Page 46
Updated list of contemporary sundial makers for reference and contact.
The BSS and Members

Page 47
Annotated bibliography of books relevant to sundial enthusiasts and researchers.
Book Reviews

Page 48
Society announcements and notes from the BSS Secretary, including administrative updates.