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This bench mark was established between 1850 and 1856 during the First primary levelling of England & Wales, and was levelled with a height of 285.5160 feet [87.0253 metres] above mean sea level (Liverpool datum). It was included on the Basingstoke to Coventry levelling line. The surveyor's description was "No. 195. Mark on front of house at South side of road, Sherbourn Hill ; 1.65 ft. above surface" (Public Abstract p.240).