Levelling
of Great Britain
[1GL, 2GL Transcription]
[FBM List]
|
Ordnance Survey's Levelling of Great Britain |
[1GL, 2GL Abstract] [1GL, 2GL Transcription] |
[Timeline] [FBM List] |
|
Files Held at Kew'Levelling' Files | [General Levelling Files - 1GL - 2GL] (All | Viewed) |
| Ref | Source | Date | Notes |
|---|---|---|---|
| + - OS 45 | Ordnance Survey of Great Britain: Director General: Manuals and Instructions | 1882-1978 | |
| OS 45/82 | Levelling handbook: 2nd edition | 1963-1974 | |
| + - OS 14 | Ordnance Survey: Central Registry: Experiment Files (E Series) | 1950-1988 | |
| OS 14/54 | Minor experiments : trigonometry and levelling including reports | 1968 Feb 01-1969 Nov 24 | |
| OS 14/60 | Hydrostatic levelling | 1965 Dec 01-1972 Mar 31 | |
| OS 14/62 | Levelling equipment :field tests and reports of various automatic setting levels | 1968 Dec 01-1977 Mar 31 | |
| OS 14/68 | Fourth geodetic levelling : correspondence and reports | 1971 Jun 01-1977 Oct 31 | |
| OS 14/81 | Fourth Geodetic Levelling: proposed Ordnance Survey and Institute of Oceanographic Sciences experiment to compare geodetic and hydrodynamic levelling techniques | 1977 Oct 14-1980 May 21 | |
| OS 14/82 | Geodetic levelling techniques: includes National Geodetic Survey paper 'Refraction Errors in Levelling - NGS Test Results'; report on a visit to the National Survey of Sweden to view a motorised geodetic levelling production unit in operation | 1980 Jul 01-1981 Sep 16 | |
| + - OS 54 | Ordnance Survey: Trigonometrical and Levelling Divisions: Levelling Books and Abstracts | 1874-1954 | |
| OS 54/239 | A 577 Special levelling (Wigton 1949) (Wiltshire 1949) | 1949 Jan 01 - 1949 Dec 31 | |
| OS 54/246 | A 584 Special levelling (Chatham - Dunkirk 1950) (Sheffield 1950) (Yorkshire 1950) | 1950 Jan 01 - 1950 Dec 31 | |
| OS 54/258 | A 596 Special levelling (Eskmeals 1952) (Aberporth 1952) | 1952 Jan 01 - 1952 Dec 31 | |
| + - OS 3 | Ordnance Survey: Miscellanea | 1755-1993 | |
| OS 3/76 | The levelling system of Great Britain | 1950 | |
| OS 3/79 | Matters arising from the completion of the third geodetic levelling of Wales by Major J. Kelsey, RE: prepared for Commonwealth Survey Officers' Conference 1959 | 1959 | |
| OS 3/422 | 'Levelling Instrument WILD NII: Description and Instructions for use': Author and publisher Surveying Instruments Supply Company Limited, Henry Wild, Heerbrugg Switzerland | UNDATED-UNDATED | |
| OS 3/437 | 'Report on the Levelling Network of London and Kent': Author and publisher Ordnance Survey | 1932 Jan 01-1932 Dec 31 | |
| OS 3/439 | 'Report on the Levelling Network of Wales': Author and publisher Ordnance Survey | 1932 Jan 01-1932 Dec 31 | |
| OS 3/281 | Draft report on the work of the Levelling Division, 1921-1926 | [1926] | |
| + - OS 51 | Ordnance Survey: Photographs and Pictorial Images | 1950-1969 | |
| OS 51/90 | Ridgeway Base 1937 short levelling staff: baseline measurement - photograph showing a short levelling party | 1950 Jan 01-1968 Dec 31 | |
| OS 51/176 | Plane mirror: photograph showing the mounting, central stop and levelling screws | 1950 Jan 01-1968 Dec 31 | |
| OS 51/402 | First Geodetic Levelling England and Wales 1840-1860: map showing the levelling. Mean date January 1950 based on a tidal pole fixed at the entrance to Victoria Dock in London 1844. Plate I in the book 'Second Geodetic Levelling of England and Wales 1912-21' by Sir Charles Close 1921 with chapters written by Lieutenant-Colonel A J Wolff and Mr H L P J Jolly (View) | 1950 Jan 01-1968 Dec 31 | |
| OS 51/403 | First Geodetic Levelling Scotland 1844-1859: map showing the levelling. Mean date January 1950 based on a tidal pole fixed at the entrance to Victoria Dock in London 1844. Plate I in the book 'Second Geodetic Levelling of England and Wales 1912-21' by Sir Charles Close 1921 with chapters written by Lieutenant-Colonel A J Wolf and Mr H L P J Jolly (View) | 1950 Jan 01-1968 Dec 31 | |
| OS 51/404 | Second Geodetic Levelling England and Wales 1912-21: map showing the levelling. Mean date January 1916. Tidal stations were fixed at Newlyn (Cornwall), Felixstowe (Suffolk) and Dunbar and 115 fundamental bench marks laid across the country. Subsequent flush brackets also added to the primary lines. | 1950 Jan 01-1968 Dec 31 | |
| OS 51/405 | Second Geodetic Levelling Scotland 1936-52: map showing levelling (View) (View) | 1950 Jan 01-1968 Dec 31 | Second Geodetic Levelling Scotland 1936-52: map showing levelling |
| OS 51/407 | Second Geodetic Levelling showing difference between Newlyn and Liverpool: map showing the differences of level throughout England between the old levels based on the old Ordnance Survey Datum and the new geodetic levels based on mean sea levels at Newlyn (Cornwall). | 1950 Jan 01-1968 Dec 31 | |
| OS 51/408 | Third Geodetic Levelling: map showing levelling of Great Britain showing tidal stations, fundamental bench marks, the second levelling of Scotland and the third levelling of England and Wales labelled plate IV source unknown, circa 1950s (View) (View) | 1950 Jan 01-1968 Dec 31 | Third Geodetic Levelling |
| OS 51/409 | Connections of tidal stations to levelling networks: map of Britain and Europe showing the connection of tidal station to the European Levelling Network, circa 1960 (View) (View) | 1950 Jan 01-1968 Dec 31 | Very Little Detail |
| OS 51/412 | Newlyn observation: split shot showing a photograph of Newlyn (Cornwall) from the air and a map of Newlyn at 6 inches to 1 mile scale. Plate XIIa in the book 'Second Geodetic levelling of England and Wales 1912-21' by Colonel Sir Charles Close 1921 with chapters written by Lieutenant-Colonel A J Wolff and Mr H L P J Jolly (View) | 1950 Jan 01-1968 Dec 31 | |
| OS 51/413 | Tidal observatory Dunbar: diagram showing the plan, section and elevation and view of the tidal observatory at Dunbar (East Lothian). Plate XII in the book 'Second Geodetic levelling of England and Wales 1912-21' by Colonel Sir Charles Close 1921 with chapters written by Lieutenant-Colonel A J Wolff and Mr H L P J Jolly (View) | 1950 Jan 01-1968 Dec 31 | |
| OS 51/414 | Tide gauge: front view of an automatic tide gauge. Plate XIII in the book 'Second Geodetic levelling of England and Wales 1912-21' by Colonel Sir Charles Close 1921 chapters written by Lieutenant-Colonel A J Wolff and Mr H L P J Jolly (View) | 1950 Jan 01-1968 Dec 31 | |
| OS 51/415 | Tide gauge: side view of an automatic tide gauge. Plate XIII in the book 'Second Geodetic levelling of England and Wales 1912-21' by Colonel Sir Charles Close 1921 with chapters written by Lieutenant-Colonel A J Wolff and Mr H L P J Jolly (View) | 1950 Jan 01-1968 Dec 31 | |
| OS 51/416 | Fundamental bench mark diagram: diagram showing plan and section dated 1913. Plate X in the book 'Second Geodetic levelling of England and Wales 1912-21' by Colonel Sir Charles Close 1921 with chapters written by Lieutenant-Colonel A J Wolff and Mr H L P J Jolly (View) | 1950 Jan 01-1968 Dec 31 | |
| OS 51/419 | Fundamental benchmark being opened up: process of Third Geodetic Levelling, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/420 | Fundamental benchmark checking between surface mark: process of Third Geodetic Levelling, circa 1950s. Used in the book 'OS - Mapmakers to Britain since 1791' by Tim Owen and Elaine Pilbeam 1992 | 1950 Jan 01-1968 Dec 31 | |
| OS 51/421 | Leveller observing height between fundamental and surface mark: process of Third Geodetic Levelling, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/422 | Shell deep benchmark: levelling - diagram showing a section through a shell permanent deep bench mark | 1950 Jan 01-1968 Dec 31 | |
| OS 51/423 | Flush bracket showing detachable bracket: levelling - diagram showing the section and front view of bracket, dated 1913. Plate XI in the book 'Second Geodetic levelling of England and Wales 1912-21' by Colonel Sir Charles Close 1921 with chapters written by Lieutenant-Colonel A J Wolff and Mr H L P J Jolly (View) | 1950 Jan 01-1968 Dec 31 | |
| OS 51/424 | Levelling marks and brackets: display of various marks and brackets | 1950 Jan 01-1968 Dec 31 | |
| OS 51/427 | Levelling: use of a Cooke Troughton and Sims 5400 level, circa 1940s, 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/428 | Geodetic levelling staff on flush bracket: use of staff on the side of a brick wall, circa 1940s, 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/429 | Geodetic levelling staff on shoe: levelling - staff mounted on a 'shoe' in an urban setting, circa 1940s, 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/430 | Geodetic levelling party at work: general view, circa 1940s, 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/431 | Geodetic levelling - page of levellers field book: completed in the field, dated 29 November 1950 | 1950 Jan 01-1968 Dec 31 | |
| OS 51/432 | Geodetic levelling - page of levellers field book completed in office: dated 1 February 1947 | 1950 Jan 01-1968 Dec 31 | |
| OS 51/433 | Geodetic levelling abstract: Duns Common - Kelso (Scotland), dated August 1952 | 1950 Jan 01-1968 Dec 31 | |
| OS 51/436 | Tertiary levelling using S400 level: use of a Cook, Troughton and Simms S400 spirit level, circa 1940s, 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/437 | Tertiary levelling staff holder: levelling staff mounted on a 'shoe' and staff holder, circa 1940s, 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/438 | Tertiary levelling party at work: showing leveller and staff holder, circa 1940s, 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/439 | Tertiary levelling - page of levellers field book: specimen page completed in the field, dated 24 October 1946 | 1950 Jan 01-1968 Dec 31 | |
| OS 51/440 | Tertiary levelling - page of levellers field book completed in office: specimen page,dated 24 October 1946 | 1950 Jan 01-1968 Dec 31 | |
| OS 51/441 | Tertiary levelling abstract: Oxfordshire, dated November 1952 | 1950 Jan 01-1968 Dec 31 | |
| OS 51/442 | Relevelling London staff holder in Oxford Street: Third Geodetic Levelling, circa mid 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/443 | Relevelling London leveller in Oxford Street: Third Geodetic Levelling. circa mid 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/444 | Relevelling London staff holder in Oxford Street: Third Geodetic Levelling, circa mid 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/452 | Calculating machines Facit, hand: used for triangulation and levelling computations in Survey Computations branch, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/453 | Calculating machines Victor Electric: used for levelling computations in Survey Computations Branch, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/454 | Calculating machines National Cash Register: used for levelling computations and benchmarks in Survey Computations Branch, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/455 | Calculating machines view of level computers: Survey Computations - general view of staff working on levelling computations, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/462 | Sorter: Survey Computations - view of a punch card sorter used in levelling computations, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/463 | 420 Accounting Machine: Survey Computations - view of an IBM 420 accounting machine used in levelling computations, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/466 | Levelling computations flow chart 1-3: Survey Computations - diagram showing the flow chart between stages 1-3 of the work required and machinery used in levelling computations, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/467 | Levelling computations flow chart 4-6: Survey Computations - diagram showing the flow chart between stages 4-6 of the work required and machinery used in levelling computations, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/468 | Levelling computations flow chart 7: Survey Computations - diagram showing the flow chart for stage 7 of the process, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/1389 | Index map of initial levelling of England and Wales: levelling carried out between 1841 and 1860, used in 'Ordnance Survey Mapmakers to Britain' by Owen and Pilbeam | 1950 Jan 01-1968 Dec 31 | |
| OS 51/1429 | Staff on angle iron: levelling staff fixed onto a Bench Mark in the snow | 1950 Jan 01-1968 Dec 31 | |
| OS 51/1430 | Leveller taking reading: military surveyor levelling with level mounted on a tripod, circa 1910s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/1433 | Fundamental Bench Mark: plan and section. Plate X in 'Second Levelling of England and Wales 1912 - 1921' | 1950 Jan 01-1968 Dec 31 | |
| + - OS 3 | Ordnance Survey: Miscellanea | 1755-1993 | |
| OS 3/91 | Origin of the broad arrow (used by the Ordnance Survey as Bench Mark which indicates the point to which levels have been observed) | 1964 | |
| + - OS 51 | Ordnance Survey: Photographs and Pictorial Images | 1950-1969 | |
| OS 51/1396 | The Geodetic Network: showing tidal stations and fundamental Bench Marks across England and Wales | 1950 Jan 01-1968 Dec 31 | |
| OS 51/417 | Fundamental buried benchmarks: exposed benchmarks, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/418 | Fundamental benchmark showing railings and pillar: showing surface mark, circa 1950s | 1950 Jan 01-1968 Dec 31 | |
| OS 51/445 | Benchmark list: list of all benchmarks that fall on 1:2500 sheet SY 1188 | 1950 Jan 01-1968 Dec 31 | |
| OS 51/1201 | Description of Height Control Point: diagram of point 23155G, Rhyl, Wales, dated 1959 | 1950 Jan 01-1968 Dec 31 |