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Margaret Folkard


This article discusses the Benares Sundial, one of five equatorial sundial observatories built in India by astronomer prince Sawai Jai Singh II in the 18th century to rectify astrological errors. The authors also describe their work with stereoscopic images and an autocyclostereoscope for viewing 3D images without special glasses, including a 1902 stereograph of the Benares sundial.
Dials: Equatorial, How Sundials Work, Historical Dials

This article describes a technique for rapidly producing vertical skeleton sundials from stainless steel using a 3.5-kilowatt laser cutter. Designs are created on a computer with specific location, wall orientation, and date lines. The method allows for intricate details, including owner's names and quotations. The technique can also create silhouette window sundials with sandblasted glass, and accurate analemma plates in stainless steel and brass, suitable for human-involvement analemmatic dials.
Construction Projects, DIY Sundial Projects, Dials: Vertical, Sundial Design & Layout

Introduces a reconstructed sun compass inspired by a Greenland find and sets it in Norse navigation: maintaining latitude by noon Sun and Polaris, with practical insights on use at high latitudes and during seasons when both Sun and star are visible.
Dials: Portable, Historical Dials

This article details an Open Day showcasing a large equatorial bronze sundial for Mount Tomah Botanic Garden in Australia. It describes various sundial types displayed, including analemmatic dials, and techniques for high-quality sundial design and casting using photopolymer. The article covers historical sundials, navigation instruments, and methods for making accurate hour lines and gnomons, celebrating the spread of gnomonic knowledge.
Construction Projects, Sundial Design & Layout