1912
Flintshire Sheet XIV 5
Edition of 1912
Surveyed in 1869 - 70
Revised in 1909
Altitudes are given in Feet above the assumed Mean Level of the Sea at Liverpool which is 0.650 of a foot below the general mean level of the Sea.
Altitudes indicated thus (B.M.+ 54.7) refer to Bench marks on Buildings, Walls, etc., those marked thus (+52) to surface levels.
Crown copyright reserved.
Author: Ordnance Survey
Year = 1912
Document = Map
Landscape = Urban
Extra = 1910s
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