Levelling Homepage Ordnance Survey's
Levelling
of Great Britain		 [1GL, 2GL Abstract]
[1GL, 2GL Transcription]		 [Timeline]
[FBM List]		 TrigTools

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 1/284Fundamental Bench Marks1927 - 1953IanR