A 17th-century German ivory and brass pocket 'barrel-form' sundial compendium, unsigned but stamped with the initials CC within a crown on the sun-dial ring, the base formed as a vinaigrette, with mirror, the dry-card compass painted in blue/red the dial with folding gnomon, the main body with calender and sun/moon phase volvelle and accessory interior with cover 3¼in. (8.3cm.) high