/internal/media/dispatcher/7353/fullMarine Chronometer in Original Case1871-1885[William Weichert]William WeichertA rare 8-Day Marine Chronometer brass- bound and mounted Coromandel in original wooden case, with two brass handles, made by William Weichert, Maker to the Admiralty, No. 2186. The latter information is illustrated on an oval ivory plaque, on the case’s exterior. The case is a three-tier structure with a blank shield-shaped cartouche inlaid to the upper lid. There are three stickers on the exterior (see Marks). On the interior, the lid is adorned with two illustrated notes, one of the manufacturer and one of the repair shop, and a sticker – two of them behind a Perspex panel, one exposed (see Inscriptions and Marks). The 12cm silvered dial in a gimballed bowl with power reserve ring with outer minute track and Roman numerals, its centre is engraved and heightened in red wax with two Exhibition medals for Paris 1867 and Harve 1868. It is signed “William Weichert Patentee of the Centre Second Chronometer The Bute Docks Cardiff”. A state of wind dial is found on the upper part, while below a seconds ring inscribed “The Order of the Golden Cross & Crown H.M Emperor of Austria”. It has a free sprung helical spring with diamond endstone to a cut and compensated bimetallic balance, set on a sub plate, with maintaining power to the chain fusee and Earnshaw spring detent escapement. William Weichert was active in London between 1865 and 1887, and Bute Docks, Cardiff between 1871 and 1885. He exhibited his chronometers in Paris in 1867, in Havre in 1868 and won a Grand Medal of Merit at the Vienna Exhibition in 1873. He was a maker to H.M Emperor of Austria, and was awarded the Golden Cross and Crown and made patentee of the centre seconds chronometer. He also trained many craftsmen (Mercer, 1988: 252). A chronometer was used to find the longitude at sea by comparing the time on an accurate clock, set to the time at the ship's home port, with that of a measurement of the local time at the ship's position. It was typical for nineteenth century chronometers to be placed in brass bound, square section mahogany cases with double-hinged top and side carrying handles (Baddeley, 1993: 45).Navigation and Timekeeping / Magnetic and Astronomicalhttps://emuseum.heritagemalta.mt/objects/888/rdf