Universal equinoctial sundial
1851-1900
Circular Sundial
Universal Augsburg type equinoctial sundial
1701-1800
Universal equinoctial sundial signed "Carl Von Mandern fecit Hafnia"
1701-1800
Octagonal brass dial mounted on wood
Universal equinoctial sundial. French
1921-1940
Universal equinoctial sundial, portable, with mahogany case
1801-1900
Sundial, made as a locket
1596
Universal sundial
1734-1795