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A RARE AND FINE DOUBLE THEODOLITE BY MATTHEW BERGE, LONDON, FORMERLY OWNED BY THOMAS, FIRST BARON DUNDAS, GOVERNOR OF THE FORTH AND CLYDE CANAL COMPANY AND PROMOTOR OF WILLIAM SYMINGTON'S STEAM BOAT TRIALS, CIRCA 1805, constructed in lacquered brass with silvered scales, signed and inscribed on the main plate M. Berge, London / Lord Dundas, bubble levels, compass with jewelled pivot, telescope with blanking nut, lower telescope mounted on separate axis, secondary base with screw levelling and threaded removable tripod feet, contained within original fitted shaped wooden box of issue with two telescope tubes, adjusting instrument and key -- 14½ x 11½ x 8¼in. (37 x 29x 21cm.), Thomas, Lord Dundas (1741-1820) the educated and well-connected "nabob of the north" was a hugely significant figure in Scottish and Northern English politics and culture almost until the day he died. As a friend of the Prince of Wales, Lord Dundas enjoyed an active social life, being a member of Brooks's Club, the United Service Club, the Society of Dilettanti and the Society of Antiquaries. From 1793 to 1813 he was the effective commander of the Yorkshire militia, and was Lord Lieutenant and Vice-Admiral of Orkney and Shetland between 1794 and 1820. An enthusiastic agricultural improver, he spent his income from rents on draining and enclosing land, experimenting with new crops and breeds and building water- or horse-powered threshing mills. As governor of the Forth and Clyde Navigation Company (1786-1816), he presided over the canal's completion and the creation of Grangemouth and Port Dundas. He also persuaded the company to test the first practical steam-tug, the Charlotte Dundas - named for a daughter. Despite its early promise, concerns over bank erosion were not addressed and the project foundered. Matthew Berge succeeded Jesse Ramsden in 1800 and for a time signed his instruments "Berge, Late Ramsden". This example has a more flamboyant signature now obscured by a plate securing knob and had to be re-signed underneath, but was probably used by Dundas until he stepped down as Governor of the Canal in 1813.
A 18TH-CENTURY THEODOLITE BY GEORGE ADAMS, LONDON, the 8½in. telescope with bubble under, mounted on silvered arc with rack-and-pinion adjustment, 2½in. silvered compass, secondary levelling tube, signed near edge G. Adams London mounted on two stage platform with threaded adjustment, now on later ebonised base -- 11in. (28cm.) high
AN EARLY 19TH-CENTURY THEODOLITE BY W.S. JONES, LONDON, signed on the silvered dial as per title and inscribed 30 Holborn, London, constructed in lacquered brass, with telescope and levelling tube mounted over horseshoe arc, 9½in. (24cm.) high; together with a lacquered brass telescope sight and bubble by the same makers., (2)
A large lacquered theodolite by Troughton & Simms, London, with modern base, spare brass platform, and associated mahogany case, length of lens 37cm. CONDITION REPORT: 18cm - vertical circle. 20cm - horizontal circle. One lens replaced. No accessories. General surface wear. Appears to be OK.
Early 20th Century Stanley patent lacquered and patinated brass transit theodolite, pat. no 23009, with triform base, twin verier scales and X and Y spirit levels, 34cm, with original labelled mahogany box and canvas cover. CONDITION REPORT: No compass. Telescope works, showing inverted image, some grime to lenses.
AN ENGLISH BRASS TRANSIT THEODOLITE BY NEGRETTI & ZAMBRA, LATE 19TH C the telescope with bubble level and rack and pinion focusing, vertical circles calibrated in degrees with twin verniers on trunions and rotating table with X & Y levels, silvered compass signed Negretti & Zambra London 479, twin fine vernier scales, on adjustable threaded feet and staff head mount, with several accessories in fitted mahogany box, 32cm w ++Box with minor old surface scratches, the instrument retaining most of the original lacquer, the lacquer spotted and discoloured, unrestored
E R WATTS & SON, LONDON, LACQUERED BRASS AND BLACK JAPANNED THEODOLITE DATED 1903, formed in two parts each with SEPARATE FITTED MAHOGANY TRANSPORTATION BOX, the upper portion with sighting telescope, the top revolving in vertical plane with 360° scale, the bottom in horizontal plane with 360° scale and having spirit level on tri-form base with screw thread levels, 15 1/2" (39.5cm) high overall when assembled, the case to receive bottom section fitted to hold THREE EXTRA LENSES, BRASS PLUMB BOB and TRIPOD FITTING
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2335 item(s)/page