A BLOUD-PATTERN IVORY AZIMUTH DIPTYCH DIAL FACE, LATE 17TH CENTURY/EARLY 18TH CENTURY, face Ia with table of hours, face Ib with (incomplete) calender vovelle, face Ic with folding azimuth elipse decorated with scrolls and hour scale, compass card with printed latitudes of fourteen cities, face Ib with pewter calender vovelle--2¾in. (6.4cm.)