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 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 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 |