Scientific Instruments
Traveling sundial and compass
Smithsonian, Cooper Hewitt, Smithsonian Design Museum. Open access, CC0.

Traveling sundial and compass

A foldable brass sundial with a built-in compass, set for your latitude, showed the hour from the sun's shadow.

Date
early–mid-18th century
Place
Germany
Materials
Brass, steel, paper, leather, silk
Dimensions
2.2 x 8.4 x 8.7 cm (7/8 x 3 5/16 x 3 7/16 in.)
Museum
Cooper Hewitt, Smithsonian Design Museum
Credit line
Given by the estate of Mrs. Lathrop Colgate Harper

Octagonal engraved brass disc on three feet; in center, sunk compass. On one side hinged, scrolled frame for missing pendulums. On other side, a hinged graded circle segment for setting latitudes. On third side, hinged ring with hours, and cross bar with needle. B) Octagonal case covered with brown leather and lined with blue silk. Disc with engraved named and latitudes of important cities inside cover.

The museum's own record (Smithsonian, Cooper Hewitt, Smithsonian Design Museum)