Levelling Homepage Ordnance Survey's
Levelling
of Great Britain		 [1GL, 2GL Abstract]
[1GL, 2GL Transcription]		 [Timeline]
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Files Held at Kew

'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 1Ordnance Survey: Central Registry: Registered Files (SO and CR Series)1959-1988
OS 1/134Re-levelling of Greater London1927-1948Some interesting maps and abstracts
OS 1/315Levelling1931 - 1953
OS 1/1086Levelling1953-1958
OS 1/1087Levelling1958-1967
OS 1/1139Third geodetic levelling: Scotland1956-1964Very Interesting Maps, of E&W too!
OS 1/1254Third geodetic levelling: publication1958-1970Some interesting Stuff
OS 1/10/4Whewell's levelling: Bristol Channel to English Channel1924-1927IanR
+ - OS 5Ordnance Survey: Maps and Plans1777-1971
OS 5/192Geodetic levelling: lines in London area1932Basic Map
+ - OS 51Ordnance Survey: Photographs and Pictorial Images1950-1969
OS 51/402First 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 51/403First 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 51/405Second Geodetic Levelling Scotland 1936-52: map showing levelling (View) (View)1950 Jan 01-1968 Dec 31Second Geodetic Levelling Scotland 1936-52: map showing levelling
OS 51/408Third 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 31Third Geodetic Levelling
OS 51/409Connections 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 31Very Little Detail
OS 51/412Newlyn 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 51/413Tidal 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 51/414Tide 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 51/415Tide 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 51/416Fundamental 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 51/423Flush 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 1Ordnance Survey: Central Registry: Registered Files (SO and CR Series)1959-1988
OS 1/284Fundamental Bench Marks1927 - 1953IanR

documents we have but not in list above:

RefSourceDateNotes
OS 1/1266IanR
OS 1/818IanR
OS 18/5IanR
OS 2/160Took Copies of Selected Stations
OS 2/161Took Copies of Selected Stations
OS 2/26Took Copies of Selected Stations
OS 5/187basic map
OS 51/1493Original Cover Design Only
OS 51/28 (View)Map of Secondary Triangulation blocks Scotland
OS 51/29 (View)Map of Secondary Triangulation blocks England and Wales
OS 54/127IanR (part)
OS 54/136IanR (part)
OS 54/143IanR
OS 54/144IanR
OS 54/145IanR
OS 54/148Have copy of Conway to Caernarvon
OS 54/154Have copy of Caernarvon to Trawsfynydd
OS 54/155IanR
OS 54/158Have copy of Trawsfyndd to Wrexham
OS 54/160IanR
OS 54/164IanR
OS 54/175IanR
OS 54/188IanR
OS 54/206RoyB has a full copy
OS 54/213IanR
OS 54/31IanR
OS 54/466Little of interest (no FB's)