12/internal/media/dispatcher/1477/fullCompass with Sundial1700-1770Leonhard Andreas KarnerMMM 001188489047183A miniature Diptych dial for 49° North. It consists of two leaves that fold flat when not in use. Leaf 1 exterior is blank except for a double-lined border. Leaf 1 interior contains the vertical dial with hour-lines radiating from a double circle. Within the circle are five trefoil motifs and a snowflake motif. The leaf has a double-lined border. Leaf 2 interior features the compass with the hours for the horizontal dial set around it. The string gnomon is broken. The compass has the cardinal points marked in Latin and is offset 20° West of North to allow for magnetic variation. At the bottom of the leaf are three trefoil motifs and a double-lined border. A brass pin for keeping the leaves aligned when closed is on the bottom right. Leaf 2 exterior is blank. The leaves have a brass hook fastener and a single brass hook for holding the dial open. /internal/media/dispatcher/1473/fullCompass with Sundial1785-1790MMM 001187489048182A finely decorated 18th century Diptych Sundial and Compass in a portable wooden boxwood, with string gnomon, possibly of German origin. Similar compasses were attributed to Johann Georg Kleininger of Nuremberg, dating back to circa 1785- 1790. This miniature diptych dial consists of two leaves that fold flat when not in use. Leaf 1 exterior contains a deteriorated inscription which unfortunately is not legible. Leaf 1 interior contains the vertical dial with hour lines radiating from a central decorative motif. This leaf is decorated with borders and hand-painted grapes. Leaf 2 interior has the dial, where the cardinal points are possibly marked in German. The dial is surrounded by hour references. Both clock and leaf are surrounded by a decorative border, with hand-painted floral and vegetal motifs, namely two sunflowers. Leaf 2 exterior is blank. The leaves have a brass hook fastner./internal/media/dispatcher/1480/fullMariner's Compass1600-1699MMM 000065.2489052158Mariner's compass composed of two parts - the compass itself inside the boxwood case and the lid. It may be a Portuguese invention but requires further research. This small compass is mounted in a turned wooden box. The card is probably hand-painted and is marked with the 32 points. The north point is decorated and the east point with a cross indicating Jerusalem. The other cardinal and semi-cardinal points are marked G, L, S, O, P and M./internal/media/dispatcher/7274/fullEquinoctial Sundialca. 1790MMM 000070489571877A fine 18th century portable equinoctial sundial, with engraved hour dial supported on a brass stand with three adjustable feet allowing it be at level when in use, indicated by the bubble device enclosed withing the compass rose. Various makers of similar sundials have been noted in the 18th century, namely Johann Norbert Holderich (1749-1806) of Augsburg, Dudley Adams (active 1788-1817) or Peter Dollond (1731-1820). Considering that the compass cardinal points are in English, the maker could possibly be British./internal/media/dispatcher/7323/fullShip's Compass in CaseSimpson Lawrence & Co. (Glasgow)MMM 000086489572878Ship's compass with cardinal points in English, enclosed within a mahogany case. The manufacture company is Simpson Lawrence & Co. of Glasgow, which was started in 1908, and became a limited company in 1937./internal/media/dispatcher/7272/fullProportional DividersMMM 000066489573879An 18th century brass proportional divider, made of two limbs, hinged together at one end and engraved with trigonometrical scales and graduated lines of sines, tangents and other geometric functions. Such instruments were used by draughtsmen, engineers and navigators. French origin./internal/media/dispatcher/7340/fullNavigator's DividerW & HCMMM 001244489574880A navigator's divider with a brass head and stainless steel legs with a maker's mark of W&HC England. It has two sharp stainless steel points that are used for measuring distances by transferring the gap between the points to or from a scale. The hinge enables the user to change the gap distance, even with one hand./internal/media/dispatcher/7333/fullOctantMMM 000310489578884/internal/media/dispatcher/7342/fullCompass in brass binnacleca. 1940MMM 001247489579885/internal/media/dispatcher/7353/fullMarine Chronometer in Original Case1871-1885William WeichertMMM 001954489582888A 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)./internal/media/dispatcher/7289/fullSextant in Original Box10 July 1945Henry Hughes & Sons Ltd.MMM 000073.5489583889Sextant in original box with accessories. The mahogany box has two hooks for closure and a key hole on the front, as well as a handle on the left-hand side. On the interior, the box is covered in green padding material. The lid has a manufacture note and instruction plaque (see Inscriptions). The sextant has a "HUSUN Trademark" mark on it, and is inclusive of accessories including key tied to a string, cloth and a small Glass bottle of whale oil. The sextant has a black powder-coated finish, whilst the traditional inlaid silver scale is marked from -5 to 150 degrees in single increments. It has a mirror adjusting tool and a screw-on eyepiece sun filter. The word 'sextant' was developed from the actual arc of the frame which occupies a sixth of a circle, and it was a development from the octant. The need to have an instrument measuring up to 120 degrees arose from the observations determination of longitude. The sextant is useful to read horizontal angles and, its all metal construction makes it more accurate than a wooden octant (Baddeley 1993: 50)./internal/media/dispatcher/7315/fullSextant with Accessories in wooden boxC no. A.CMMM 000081.5489584890Sextant with mahogany box and accessories. The mahogany box has two hooks for closure on either side, and a handle on the front. It is engraved with the letters C no. A.C. The box contains three separate lenses of varying dimensions. The sextant is mounted separately for exhibition purposes. It is engraved with the name "Philip Stratfield R.N". The sextant has a magnifier on a swiveling arm, a telescope bracket with perpendicular adjustment. The word 'sextant' was developed from the actual arc of the frame which occupies a sixth of a circle, and it was a development from the octant. The need to have an instrument measuring up to 120 degrees arose from the need of lunar observations for the determination of longitude. The sextant is useful to read horizontal angles and its all metal construction makes it more accurate than a wooden octant (Baddeley 1993: 50).