2019
NY4155 : Part of benchmark on Petteril Street wall of No. 38 River Street
taken 6 years ago, near to Carlisle, Cumbria, England

Part of benchmark on Petteril Street wall of No. 38 River Street
Datum line of Ordnance Survey benchmark (the bottom part of the mark now hidden) levelled at 16.033m above Newlyn Datum verified in 1955. See Link
