Ordnance Survey Benchmark - Hartford, Barley Mow Inn
Introduction
The photograph on this page of Ordnance Survey Benchmark - Hartford, Barley Mow Inn by N Scott as part of the Geograph project.
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Image: © N Scott Taken: 8 Jan 2016
Ordnance Survey Benchmark (OSBM) used for levelling height above Ordnance Datum (OD). Height (1966): 11.0399m OD (Newlyn). Mark verified by the Ordnance Survey in 1966. Description: PH NO 42 MAIN ST SW FACE S ANG. 0.2m above ground. 3rd Order BM. The mark was used on the Thrapstone to Chelmsford line of the First Primary Levelling of England & Wales in 1851-1857. It was levelled with a height of 37.414' above OD (Liverpool). Description: 37. Mark on South-east corner of the Barley Mow Inn, Hartford ; 1.94 ft. above surface. Page 318 of the abstract: http://www.trigtools.co.uk/data/1GL/1GLA_318.png Context: Image
