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Medieval Time: Timekeeping Instruments

Library and internet materials for research on aspects of Medieval time and the study of chronology.


Intended as an overview of available secondary works on non-calendrical timekeeping instruments. Grouped into the following categories:



Miniature de "Horologium Sapientiae" vers 1450 de Henrich Seuse
Bibliothèque Royale Albert, Bruxelles
 MS. IV, f.  111

Meridian Line

Giovanni Cassini. Heliometer in the Church of San Petronio in Bologna (1695)

Caltech. RB-GC1695-2