September 2012 page 35
Tony Wood

Decorative Dials

This article discusses sundials designed purely for decorative or ornamental purposes, rather than for time-telling. Examples include two identical large gnomon dials at Barnsley and Ablington Manor, colourful tile dials from the Mediterranean, and an expensive, unfinished replica of a Thomas Tompion double horizontal dial at Hampton Court.
Dials: Vertical, Dials: Unusual, Dials: Double Horizontal

June 2011 page 26
Jackie Jones

A Dial to Travel With

This note describes the discovery of the 'missing' John Rowley azimuth dial from Blenheim Palace, which was identified on a new passport design. It details the dial's distinctive features and its reinstallation in 2008.
Dials: Unusual, Historical Dials, The BSS and Members, Dials: Double Horizontal

September 2011 page 23
John Davis

Daniel Delander Dial Recovered

This report details the recovery of a stolen large double horizontal dial by Daniel Delander from Stanford Hall, thanks to Polish dialling enthusiast Maciej Lose. The dial, catalogued as DH-17, SRN 3607, is a high-quality instrument with Equation of Time scales and geographical place names. The article also mentions Delander's apprenticeship under Thomas Tompion, suggesting close working relationships between notable clockmakers.
Equation of Time, Historical Dials, Dials: Double Horizontal

March 2010 page 9
Peter Baxandall

Book Review

A review of the BSS monograph 'The Double Horizontal Dial - and associated instruments' by J. Davis & M. Lowne. The book covers the history, geometry, design, manufacture, and engraving of double horizontal dials, horizontal instruments, and horizontal quadrants from the 17th century onwards.
Book Reviews, Dials: Double Horizontal, Historical Dials

September 2010 page 46
Irene Brightmer

Henry Sephton (1686-1756) – Architect, Mason and Diallist

This article examines Henry Sephton, an 18th-century Liverpool architect and mason, as a significant provincial diallist. It describes several dials attributed to him, including signed double horizontal dials at Croxteth Hall and Knowsley Hall, a horizontal dial at Ince Blundell Hall, vertical dials on churches, and two globe dials, highlighting his characteristic transversals and artistic style.
Dials: Horizontal, Construction Projects, Historical Dials, Dials: Double Horizontal

June 2009 page 11
John Davis

The double horizontal dial—then and now; at the Oxford Museum of the History of Science

Reports on a mini-exhibition at the Oxford Museum of the History of Science featuring a new hand-engraved double horizontal dial by Joanna Migdal. The exhibition also included historical examples by Richard Glynne and Elias Allen, and related contemporary books.
Historical Dials, Dials: Double Horizontal

March 2008 page 38
Mike Cowham

Dial Dealings 2007

Reports on sundial sales at major auction houses in 2007, noting a shift away from scientific instruments by Christie's and Sotheby's. It details sales at Bonhams, including a 19th-century cube dial, a 17th/18th-century Polish slate dial, and a medieval astrolabe quadrant found in Canterbury. Other notable sales include portable dials by Edm. Culpeper and a double crescent dial by Johann Martin.
Dials: Portable, Historical Dials, Dials: Cube, Dials: Double Horizontal

September 2008 page 116
Irene Brightmer

Over Three Hundred Years in the Sun: Thoughts of an Old Double Horizontal Dial

This article, narrated from the perspective of a 17th-century double horizontal dial by John Marke in a North Wales garden, recounts its history. It reflects on its past importance for timekeeping, its relocation, slight misalignment, and a recent renewed interest in its preservation, highlighting its rarity and unique survival.
Dials: Double Horizontal, Historical Dials, Restoration projects

September 2008 page 117
John Davis

John Marke’s Double Horizontal Dials

This article discusses John Marke's newly discovered double horizontal dial in North Wales, noting its significance as the first known by this maker. It provides background on Marke, his apprenticeship to Henry Sutton, and his work as a mathematical instrument maker, also linking him to Robert Boyle through an engraving and a Science Museum instrument.
Historical Dials, Dials: Double Horizontal

September 2008 page 119
Frank Coe

The Dillington Double-Horizontal Dial and John Marke

This article reports the addition of the Dillington double-horizontal dial to the BSS Register, identifying its maker as Johannes Marke, London, 1678. It details the dial's history, from its installation at Knighton Manor to its current protected location in Newchurch, Isle of Wight, and its unique inscriptions in English, Latin, and Greek.
Historical Dials, Dials: Double Horizontal

March 2007 page 40
Michael Lowne

The self-setting property of dual sundials

This paper examines the self-setting property of dual sundials, typically consisting of a polar-gnomon dial and an analemmatic dial. It explains the astronomical parameters involved, how rotation affects time indications, and calculates the effectiveness of this alignment method at various latitudes and declinations. It also compares the traditional dual dial with an alternative Foster-Lambert reclining dial.
Dials: Foster-Lambert, Dials: Double Horizontal

December 2007 page 161

New Dials

This section showcases several newly completed sundials. It features a memorial dial at Westminster School for Adolph and Freda Prag, an elliptical dial carved in Portland stone, a unique double horizontal dial for the southern hemisphere on Okatjorute Farm in Namibia, a late Saxon memorial sundial for a dog in Macclesfield, and a large analemmatic dial in Pollagh, Co. Galway, Ireland, at Brigit's Garden.
Dials: Horizontal, Dials: Analemmatic, Dials: Double Horizontal

February 2006 page 33
John Davis
Michael Lowne

Henry Wynne’s Double Horizontal Dials - Update

This update provides further information on Henry Wynne’s double horizontal dials, including new historical evidence for the Staunton Harold dial’s position from 19th-century maps and photographs. It also discusses the Wrest Park replica and criticises the National Trust’s decision to preserve a bent gnomon on the Powis Castle dial as part of its history.
Restoration projects, Historical Dials, Dials: Double Horizontal

February 2006 page 35
Tony Moss

Double Trouble - The Realization in Bronze of the Henry Wynne Replica Dial

This article details the intricate process of creating a 30-inch bronze replica of the Henry Wynne dial. It covers pattern making, casting, and challenging precision machining operations, including overcoming issues with a gnomon that was initially too short and perfecting a complex knife-edge. The project required meticulous effort and problem-solving.
Construction Projects, Dials: Double Horizontal, Restoration projects, Sundial Design & Layout

June 2003 page 47
John Davis
Michael Lowne

Henry Wynne's Double Horizontal Dial at Staunton Harold

An analysis of one of the most sophisticated 17th-century dials made by Henry Wynne. The article describes the history, features (including its use as a moondial, star dial, and geographical dial), and modern restoration efforts of this large bronze dial.
Dials: Double Horizontal, Historical Dials, Restoration projects

June 2001 page 47
Michael Lowne

The Design and Characteristics of the Double-Horizontal Sundial

This comprehensive article details the double-horizontal sundial, distinguishing it from William Oughtred's earlier portable instrument. It explains its design, historical prevalence from 1630-1713, and methods for reading its complex graduations. The author also discusses modern examples and the use of stereographic projection in its delineation, providing a list of existing historical and contemporary dials.
Dials: Double Horizontal, Historical Dials, Mathematics of Dialling, Sundial Design & Layout

September 2001 page 123
Tony Belk

The Stereographic Projection as a Graphical Method for Designing Sundials - Part 2

This second part details using stereographic projection for graphical design of declining and reclining vertical, and double horizontal sundials. It explains how to determine sub-style angles and style heights, and how the projection can cover full 24-hour periods. The article also covers William Oughtred"s "Horizontal Instrument" and Blagrave"s "Mathematical Jewel" as related applications.
Dials: Double Horizontal, Dials: Vertical, Mathematics of Dialling, Sundial Design & Layout

December 2001 page 138
Michael Lowne

The Design and Characteristics of the Double-Horizontal Sundial

This article examines the double-horizontal sundial, a 17th-century invention by William Oughtred. It features two sets of graduations: one for an inclined polar gnomon and another for a central vertical gnomon, operating from altitude and azimuth. The article details its design, use for time, date, and solar altitude, and discusses its self-setting property and limitations due to orientation error.
Dials: Double Horizontal, Historical Dials, Mathematics of Dialling, Sundial Design & Layout

December 2001 page 160
John Davis
Michael Lowne

The 'Bacon' Double Horizontal Sundials

This article investigates the 'Bacon' double horizontal dial, an intriguing 17th or early 18th-century brass instrument of unknown origin. Its unique Equation of Time table and stereographic grid are detailed. Analysis suggests it predates 1752 and aligns with Tompion's calculations. A modern replica, crafted using CAD and photolithography, is also described, featuring updated EoT values and modern heraldry, signed by its maker.
Construction Projects, Dials: Double Horizontal, Equation of Time, Historical Dials