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Theodolite used for the Principal Triangulation of Great Britain
Main part of three-foot geodetic theodolite, sometimes called the ‘great Theodolite’, used for the Principal Triangulation of Great Britain. Made by Jesse Ramsden, Piccadilly, London, 1791.
‘Trans-Pac’ GPS receiver, 1990-1991
‘Trans-Pac’ GPS, global positioning system receiver, made by Trimble Navigation, California, United States, 1990-1991. Retrieved from helicopter shot down in the Gulf War, 1991. Marked P/N 14992-00, S/N 3016A00570. Patented 4, 754, 465
Magnifying stereoscope, 1940
F-71 magnifying stereoscope, made by Fairchild Aviation Corporation, Jamaica, New York, United States, 1940
Tellurometer for EDM (Electronic Distance Measurement), 1957-1962
MRA 1 tellurometer set: master and remote instruments, accessories, c. 1960
Combined graphometer and plummet clinometer, 1663.
Combined graphometer and plummet clinometer by Christoff Kohler of Dresden, 1663
Part of Two foot geodetic theodolite, British, 1826-1828
Two-foot geodetic theodolite with cast iron base and mahogany stand, by Troughton and Simms, London, England, 1826-28. Fitted with three bubble levels and eight reading microscopes. First used in 1828 for checking the Lough Foyle base.
Microptic transit theodolite, 1954
Microptic transit theodolite No 1, by Hilger & Watts Ltd, c. 1950 with box. (ex "Navigation Today" exhibition number: N.T.E. 122)
Pedometer by Spencer & Perkins
Pedometer or waywiser with fob hook, made by Spencer & Perkins, 1775-1794.
Altazimuth theodolite by Benjamin Cole & Son, London, 1755-65. Without wooden tripod base.
Surveyor's pocket sextant.
Surveyor's pocket sextant made by William Cary, London, about 1800. Lacquered brass frame, polished limb, a detachable wooden handle. Signed on the crossbar: Cary London. Brass scale from -5° to 150° every 1°, measuring to 125° (digits read from the pivot). Brass vernier to 1', zero at the left. There is no tangent or clamping screw; no shades. Index glass without adjustment; adjustment of the horizon glass by a fixed milled screw. Sight vane with one pinhole. Wooden keystone box containing in the lid a label of the Geological Survey of Great Britain marked in MS: H.W. Bristow | 28 Jermyn Street | SW [and] agenda | 6747. Used for field mapping during the Peninsular War, 1808-1814.
Alidade for plane table outfit
Alidade for plane table outfit by W. & S. Jones, 30 Holborn, London, England, 1801-1830
Plane table board for plane table outfit
Plane table board for plane table outfit by W. & S. Jones, 30 Holborn, London, 1801-1830. Fitted with modern sheet of paper.
Combined replica sleeve and original ball and socket for plane table outfit
Combined replica sleeve and original ball and socket for plane table outfit by W. & S. Jones, 30 Holborn, London, England, 1801-30.
Tripod for plane table outfit
Tripod for plane table outfit by W. & S. Jones, 30 Holborn, London, England, 1801-1830
Tachymeter-theodolite, "Theo 020", serial no.14655
Tachymeter-theodolite, "Theo 020", serial no.146557, by Carl Zeiss of Jena, in superb condition, c.1970
Prismatic surveying compass by W. F. Stanley & Co.
Prismatic surveying compass by W. F. Stanley & Co. Ltd., London, in leather case marked W. Matthews, C.E., early 20th century
Surveyor's level, German, 1926-1929
Surveying Level Model No. IV, Serial No.No. 17328, by Carl Zeiss Jena, Germany (supplied by Carl Zeiss (London) Ltd.), 1926-1929.
Watkin's type clinometer
Watkin's clinometer by J. Hicks, Hatton Garden, England, 1890-1914
Sledge-meter used on the Terra Nova Expedition, 1900-1910
snow sledge odometer, patented, No.25318, by S. Smith & Son Ltd., 9 Strand, London, England 1900-1910. Used with the British Terra Nova Antarctic Expedition, 1910-1913.
Plane table outfit including alidade
Plane table outfit by W. & S. Jones, Holborn, London, England, 1801-1830, with alidade (see part records)
Mining compass in engraved ivory case, Italian, 17th century
Mining compass in engraved ivory case, Italian, 17th century
'Sitesquare' optical square, British, 1959
'Sitesquare' optical square for laying out right angles, by Hilger & Watts Ltd, Debden, London, Essex, England,1959
Clinometer, German, 1850-1900
Brass clinometer with spirit level by W. Bandermann, Berlin, Germany, 1850-1900.
Part of sledge odometer, British Antarctic Expedition, 1900-1910
Main part of snow sledge odometer, patented, No.25318, by S. Smith & Son Ltd., 9 Strand, London, England 1900-1910. Used with the British 'Terra Nova' Antarctic Expedition, 1910-1913.
Groma, roughly made, found in Fayum Province of Egypt, 1st to 2nd century BCE
Planimeter, by Stanley, Great Turnstile, Holborn,
Planimeter, by Stanley, Great Turnstile, Holborn, London, early 20th century, in fitted box, 29x5x4cm
Bridges-Lee type phototheodolite, 1894-1896
Bridges-Lee type phototheodolite by J. Hicks, 8, 9 & 10 Hatton Garden, London, England, 1894-96.
Prismatic compass with bubble tube and small telescope, 1840-1863
Prismatic compass with bubble tube and small telescope, by Andrew Yeates, 12 Brighton Place, New Kent Road, London, 1832-1840. Inside lid engraved: 'Captain C. A. Hartley'.
Combined compass and clinometer, 1870.
Combined compass and clinometer in Captain Burnier's design, made by Bulbreck the elder of Paris, mid 19th century
Watkin type clinometer, British, 1895
Watkin type clinometer, cased, with extra spirit level, made by Elliott Brothers, Strand, London, England, 1895
Mining dial by J. Casartelli of Manchester, late 1
Mining dial by J. Casartelli of Manchester, late 19th century. Cased, trade card in lid
"Ni 007" level, serial no.200690, by Carl Zeiss, J
"Ni 007" level, serial no.200690, by Carl Zeiss, Jena. Cased, circa 1970
Level No. II by Carl Zeiss Jena, Germany, c. 1928,
Level No. II by Carl Zeiss Jena, Germany, c. 1928, no. 22050. With key and tool accessories including screw driver. Supplied by Carl Zeiss (London) Ltd.
Microptic theodolite, with tribrach & plumb bob, i
Microptic theodolite, with tribrach & plumb bob, in carrying case by Hilger & Watts Ltd. Used but good condition, circa 1970
Sectioned display theodolite, Swiss, 1970
Sectioned display model of TI-A double-centre theodolite by Wild Heerbrugg A.G., Switzerland, 1970
Ferguson solar chronometer and astronomical compass
Ferguson solar chronometer and astronomical compass, No. 124G with spare chart, by J.H. Steward, London, England. c.1912. Lacks alidade
Repeating Theodolite, Horizontal and vertical circles
Repeating Theodolite, Horizontal and vertical circles 14 & 12cm. respectively
Field clinometer, British, 1915
Field clinometer Mk III, by The Cambridge Scientific Instrument Company Limited, 1915.
Altazimuth theodolite, British, 1725-1747
Altazimuth theodolite, 4 1/2-inch, by Jonathan Sisson, Styrand, London, England, 1725-1747
Simple theodolite, Italian, 1676
Simple theodolite by Johannes Macarius of Modena, Italy, 1676
Improved Patent Portable Theodolite
Improved Patent Portable Theodolite, consisting of prismatic compass, telescopic sight and level by C. A. Schmalcalder, 82 Strand, London, England, 1818-1826.
Pedometer signed 'PVP', 1880-1920
Pedometer (or ‘passometer’), made by unknown maker ‘PVP’, late 19th / early 20th century.
Surveying quadrant, 1674.
Surveying quadrant with sights, plotting scales and gunnery scale on the obverse, by J. Lusuerg, Rome, 1674
Combined Abney Level and Clinometer, 1882-1887
Combined Abney level and clinometer, brass, by S. Henson, 277 Strand, London, England, 1882-1887.
Box type pocket sextant.
Pocket box sextant made by the company of William Cary, Strand, City of Westminster, London, England, 1845-1855. Consists of two circular lacquered brass plates with lid that acts as a handle when used. Fitted with Inlaid silver 135° scale (-5° to 145°) with 30' divisions and a silver vernier (1' div.). The index arm is rotated by a milled knob on the upper plate with two filter shades (red & green) operated by lever. The index glass is fixed with adjustment for the horizon glass. Fitted with magnifier (single lens) on hinged 45 mm swivel arm, 50mm telescope and choice of a large and a small pinhole.