December 2008 page 203
Nicola Severino
John Davis

A Puzzle at Ravello, Italy

This article investigates a puzzling sundial in the Rose Garden of Villa Cimbrone at Ravello, Italy. Despite its fine design and the builder's knowledge of clocks, the dial's inclination and gnomon angle are incorrect for its latitude, suggesting it was originally a horizontal dial for England or is a non-dial. It also mentions another horizontal dial at the villa.
Dials: Unusual, Historical Dials

February 1998 page 13
Nicola Severino

A Cushion Sundial

Notes an article from 1896 describing a dial found in a tomb of the VII or VIIIth century, with equal hour lines, which would be the earliest known dial in Europe with 'astronomical' hours.
Dials: Unusual, Historical Dials

June 1998 page 21
Nicola Severino

'Ars Magna Lucis et Umbrae' The Incredible Sundials of Athanasius Kircher

This article explores the extraordinary sundials documented in Athanasius Kircher's 17th-century masterpiece, Ars Magna Lucis et Umbrae. It highlights Kircher's unique integration of gnomonics with esoteric disciplines like astrology and alchemy, showcasing innovative dials that provided astronomical data, medical advice, and even produced sound and fire.
Dials: Unusual, Mathematics of Dialling, Sundial Design & Layout

April 1997 page 48
Nicola Severino

The Pelignum

A discussion of the Pelignum, a lesser-known sundial form, exploring its history, design, and cultural significance.
Historical Dials

July 1997 page 13
Edmundo G.A. Marianeshi
Nicola Severino

The Floating Gnomon

Describes the making of an unusual device for regulating watches following a design from 1895. It finds solar noon, by measuring the times the sun is at the same elevation just before and after noon, using a sighting mechanism floating in a can of water to ensure it is horizontal.
Dials: Unusual, Dialling Tools, DIY Sundial Projects