The instrument contains a wind rose, two pin gnomon dials showing Babylonian hours and the length of the day in hours respectively, a latitude list of 99 European cities, a horizontal string gnomon dial for different latitudes, two scaphe pin gnomon dials for Babylonian and Italian hours respectively, and a very fine set of volvelles consisting of a calendar with the names of 81 Christian saints and feast days and scales for the conversion of lunar into solar time.

British Museum, London
Registration no. MLA 1888,12-1.285

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Basic URL: http://www.mhs.ox.ac.uk/epact/catalogue.php?ENumber=48137