Page 49

Editorial

The new Editor of the Bulletin thanked his predecessors. He stated that any future changes to the Bulletin would depend on an analysis of the recent Readership Survey. He encouraged new authors to submit articles for the Bulletin.

John Davis

Page 50

The Sundial in the Chapel of Holy Trinity at Rug

This article investigates an unusual 17th-century wall painting in Rug Chapel, North Wales, which features a dial. It details the analysis of the dial's geometry and hour lines using digital tools, comparing measured angles to calculated values for a 53° North latitude, and discusses the unexpected accuracy for a painting, suggesting sophisticated planning.
Dials: Vertical, Historical Dials, Mathematics of Dialling, Sundial Design & Layout

Peter Ransom

Page 54

BSS Photographic Competition 2005

This report details the results of the 2005 British Sundial Society Photographic Competition, highlighting the winners, runners-up, and highly commended entries. It includes judges' comments, discusses criteria like artistic merit and overall impression, and announces plans for the 2006 competition.
The BSS and Members

Mike Cowham

Page 60

BSS Accounts 2005

This section provides the British Sundial Society's income and expenditure report for the year 2005. It details financial figures for subscriptions, gift aid, publications, events, sales, interest, and various expenses, along with notes explaining the figures and an auditor's comments on the accounts' clarity and accuracy.
The BSS and Members

Page 61

Sir Christopher Wren’s Dial to be Moved?

This article discusses the potential relocation of a sundial designed by Sir Christopher Wren at All Souls’ College, Oxford. It details the long-standing grievance of traditionalists about its current misaligned position and the condition in a will left by Oxford librarian John Simmons for its return to its original location.
Historical Dials, Restoration projects

John Davis

Page 63

Mass Dials - Where Did It All End?

This article explores the indistinct end of mass dials, discussing "transitional" forms that bridge medieval and scientific dials. It notes the appearance of numerals (Roman, Hindu-Arabic, or dot form) around the circumference of later mass dials, indicating a shift towards 12 o'clock noon, and touches on conversions to scientific dials.
Dials: Mass Dials, Dials: Scaphe, Historical Dials, Sundial Design & Layout

Tony Wood

Page 68

Sundial Delineation Using Vector Methods: Pt.4 - Direct East and West Dials

This fourth part of a series focuses on the delineation of direct east and west vertical dials using vector methods. It details the coordinate transformations, equations for hour lines, declination lines, sub-style angles, and gnomon characteristics for these specific dial types, also covering their illumination times.
Mathematics of Dialling, Sundial Design & Layout

Tony Wood

Page 75

Turnstyle Dial

This article describes the design and construction of a horizontal sundial with a cylindrical gnomon, which the author calls a "Turnstile Dial." It explains how the shadow is cast from a continuum of tangent points on the rounded gnomon, the practical aspects of its construction using copper, and the plotting of hour lines tangential to a central ellipse.
Construction Projects, DIY Sundial Projects, Dials: Horizontal, Sundial Design & Layout

Len Burge

Page 78

The Pyramidical Dial in the King’s Garden at Whitehall

This article reconstructs the spherical dials from the complex 1669 Pyramidical Dial in Whitehall, based on descriptions by William Leybourn. It details various glass sphere dials, including those showing time by heat ("fire"), water, optical alignment ("air"), and terrestrial globes ("earth"), and discusses their delicate construction and short lifespan.
Dials: Hemispherical, Dials: Unusual, Historical Dials

Mike Cowham

Page 91

A Review of the Heliochronometers by Pilkington & Gibbs: Pt.1 - The Design and Accuracy of the Gibbs Helio-Chronometer

This first part of a review examines the design and accuracy of the Pilkington & Gibbs Helio-Chronometer, an equatorial sundial known for its mean time accuracy. It details the instrument's components, mounting assembly, sight screen system, and the mechanism for integrating the Equation of Time using a cam, and discusses factors affecting its long-term accuracy, such as wear and calibration.
Dials: Heliochronometer, Equation of Time, How Sundials Work, Sundial Design & Layout

Graham Aldred

Page 96

Tailpiece

This short note reports that the Heath & Wing dial in the Tiltyard Garden at Hampton Court Palace was badly damaged by contractors who dropped a lopped tree branch onto its pedestal. The dial is now awaiting restoration.
Historical Dials, Restoration projects