Diptych dial in form of a book with ribbed spine. Four brass corner protectors on each cover; 2 clasps. Wind rose of 32 numbered points; half labeled in German initials. Rotating alidade. Hole for viewing compass. Compass rose, 4 points. This sundial (M-246) consists of multiple parts, some located on 19/4.
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"PAVLVS REINMAN NORIMBERGAE FACIEBAT 1599" on 1b. Nuremberg "N" on 2a.