Each of the outer leaves of this dial in the form of a book is decorated with brass spandrels and clasps, and has four bun feet. The outer part of the upper leaf has a picture of an unidentified bearded saint in toga, holding a spear, with a foliate tendril on each side.
The inner part of the upper leaf has a string gnomon dial with common hours numbered from VI to XII to VI, a sun effigy in the centre and quatrefoils enclosed in the spandrels.
The inner part of the lower leaf has a compass (ring missing) with the cardinal points marked 'SE', 'OR', 'ME' and 'OC' and the maker's mark (a crown). This mark was used by Paul Reinmann until his death in 1609, but the same mark was used by Michael Lesel from 1609 to 1629. The string gnomon dial has common hours numbered from 5 to 12 to 7 with dots and lines for the half and quarter hours. In the spandrel spaces is the same decoration as in the upper leaf.
The outer part of the lower leaf has a picture of St. Peter in toga, holding a sword, with similar foliate tendrils on the sides and brass spandrels as in the upper leaf.
See P. Gouk, The Ivory Sundials of Nuremberg 1500-1700 (Cambridge, 1988).