Sundial Pattern Testing
Including Etched Glass, Plastic, Mosaic and Ceramic Sundials
By John L. Carmichael (author) and Dave Bell (webmaster)
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Website last updated 11 April, 2009

Home, Image Archive, Design & Construction, References, Commissioning a Sundial

Design & Construction/
Sundial Pattern Testing
Window Design and Assembly Steps
Window Location
Designing the Sundial Face Pattern
Gnomon Types
Gnomon Design and Attachment
Sundial Pattern Testing
Materials and Tools
Glass Painting
Glass Joining Techniques
Mosaic and Ceramic Sundial Assembly Methods
Glossaries for Sundials and Stained Glass

We might suggest that if you have any doubts whatsoever about the correctness of a sundial pattern or its installation, you can easily test it to see how well it keeps the time and date if you tape a paper drawing of it and its cardboard gnomon to an existing window or a board located where the sundial window will be. When testing its time telling and date reading performance, don't forget to correct your time readings for Daylight Savings Time, Longitude Shift, and The Equation of Time if necessary. (Your sundial designer should tell you about these things and can provide you with a test paper drawing and a cardboard gnomon.)

Face Pattern Testing

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