Magnetic sundial
1751-1850
Horizontal magnetic sundial in wooden case
1751-1850
Horizontal magnetic sundial in wooden case
1751-1850
Horizontal magnetic sundial in wooden case
1824
Pocket sundial with floating dial
1801-1850
Portable horizontal sundial in wooden case
1824
Horizontal magnetic sundial in leather covered case
1824-1828
Horizontal magnetic sundial in wooden case
1801-1850
Horizontal magnetic sundial in wooden case
1751-1850
Magnetic sundial in brass case
1801-1900