Levelling Homepage Ordnance Survey's
Levelling
of Great Britain		 [1GL, 2GL Abstract]
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'Levelling' Files

[General Levelling Files - 1GL - 2GL] (All | Viewed)

[Summary of Records of the Ordnance Survey of Great Britain]

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RefSourceDateNotes
+ - OS 45Ordnance Survey of Great Britain: Director General: Manuals and Instructions1882-1978
OS 45/82Levelling handbook: 2nd edition1963-1974
+ - OS 14Ordnance Survey: Central Registry: Experiment Files (E Series)1950-1988
OS 14/54Minor experiments : trigonometry and levelling including reports1968 Feb 01-1969 Nov 24
OS 14/60Hydrostatic levelling1965 Dec 01-1972 Mar 31
OS 14/62Levelling equipment :field tests and reports of various automatic setting levels1968 Dec 01-1977 Mar 31
OS 14/68Fourth geodetic levelling : correspondence and reports1971 Jun 01-1977 Oct 31
OS 14/81Fourth Geodetic Levelling: proposed Ordnance Survey and Institute of Oceanographic Sciences experiment to compare geodetic and hydrodynamic levelling techniques1977 Oct 14-1980 May 21
OS 14/82Geodetic 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 operation1980 Jul 01-1981 Sep 16
+ - OS 54Ordnance Survey: Trigonometrical and Levelling Divisions: Levelling Books and Abstracts1874-1954
OS 54/239A 577 Special levelling (Wigton 1949) (Wiltshire 1949)1949 Jan 01 - 1949 Dec 31
OS 54/246A 584 Special levelling (Chatham - Dunkirk 1950) (Sheffield 1950) (Yorkshire 1950)1950 Jan 01 - 1950 Dec 31
OS 54/258A 596 Special levelling (Eskmeals 1952) (Aberporth 1952)1952 Jan 01 - 1952 Dec 31
+ - OS 3Ordnance Survey: Miscellanea1755-1993
OS 3/76The levelling system of Great Britain1950
OS 3/79Matters arising from the completion of the third geodetic levelling of Wales by Major J. Kelsey, RE: prepared for Commonwealth Survey Officers' Conference 19591959
OS 3/422'Levelling Instrument WILD NII: Description and Instructions for use': Author and publisher Surveying Instruments Supply Company Limited, Henry Wild, Heerbrugg SwitzerlandUNDATED-UNDATED
OS 3/437'Report on the Levelling Network of London and Kent': Author and publisher Ordnance Survey1932 Jan 01-1932 Dec 31
OS 3/439'Report on the Levelling Network of Wales': Author and publisher Ordnance Survey1932 Jan 01-1932 Dec 31
OS 3/281Draft report on the work of the Levelling Division, 1921-1926[1926]
OS 3/91Origin of the broad arrow (used by the Ordnance Survey as Bench Mark which indicates the point to which levels have been observed)1964