This is a reminder that the most recent BSS Monograph, number 10, is now available. “De Cursu Solis: Medieval Azimuthal Sundials” by Mario Arnaldi covers the development of these dials based on source materials dating from the 10th century onwards. It comprises 58 pages with numerous black & white photographs, diagrams and tables. For more details and to see other BSS publications, please look at our price list.

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