Augsburg dial

Augsburg dial for latitudes 0°-75° North. Standard dial (see related terms) except for the following details:-

The compass has a degree scale divided 0°-90°-0°-90°-0°. 32 points are marked, 16 by French initials, and North is further indicated by a fleur-de-lys. A brass needle indicates the magnetic variation, while a plain needle is surmounted by a brass conical pivot. Engraved around the compass are two towns with their latitudes: 'Perpignan 42.41'' and 'Rouen 49.27''. The latitude arc is divided 0°-[75°] and its inside is engraved 'Toulon 43.6''. The obverse side of the hour ring is numbered clockwise IIII-XII, I-VIII, and the inner rim is numbered 4-12, 1-8. There is decoration on the hinge and a fleur-de-lys on the outer rim of the ring marks the latitude on the latitude arc.

The base of the compass and the back of the dial-plate are engraved with a table of latitudes of places in Europe. The dial has a black octagonal leather case with red velvet lining, a push-button clasp, and two hook fasteners. It is very similar to AST0518. On its obverse side, the dial is signed 'Langlois AParis aux Galleries du Louvre'.

For more information regarding this dial please refer to the OUP & NMM catalogue, 'Sundials at Greenwich'.

Object Details

ID: AST0260
Collection: Astronomical and navigational instruments
Type: Augsburg dial
Display location: Not on display
Creator: Langlois, Claude
Date made: Early to mid 18th century
Credit: National Maritime Museum, Greenwich, London, Caird Collection
Measurements: Overall: 18 x 78 x 82 mm
Parts: Augsburg dial