2018
NZ5132 : Two Ordnance Survey Benchmarks
taken 6 years ago, near to Hartlepool, England
Two Ordnance Survey Benchmarks
These OS Benchmarks can be found on the SW face of Christ Church. The one on the left is a 1GL Bolt and the newer cut mark is on the right. It marks a point 9.199m above mean sea level.
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