SCIENTIFIC INSTRUMENTS AND MECHANICAL MUSIC
A MID-18TH CENTURY FRENCH SILVER OCTAGONAL 'AUGSBURG'-PATTERN EQUIOCTIAL COMPASS DIAL, the horizontal plate engraved with the names and latitudes of six continenta; cities and tours, wtih inset compass, the folding latitide are signed Cadot ALion and dated 1748, the folding hour ring engraved at the underside with latitudes and names of three cities, with spring loaded pin-gnomon, the underside similarly engraved with numerous names and latitudes and later engraved with a ducal crest--3in. (7.6cm.) long
細節
A MID-18TH CENTURY FRENCH SILVER OCTAGONAL 'AUGSBURG'-PATTERN EQUIOCTIAL COMPASS DIAL, the horizontal plate engraved with the names and latitudes of six continenta; cities and tours, wtih inset compass, the folding latitide are signed Cadot ALion and dated 1748, the folding hour ring engraved at the underside with latitudes and names of three cities, with spring loaded pin-gnomon, the underside similarly engraved with numerous names and latitudes and later engraved with a ducal crest--3in. (7.6cm.) long