BenchmarksGB

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Find and log OS benchmarks

BenchmarksGB: Discover, Identify & Log Britain’s Ordnance Survey Benchmarks. Whether you’re a keen walker, a history lover, or simply enjoy exploring Britain’s hidden details, BenchmarksGB turns every outing into a mini treasure hunt. BenchmarksGB is the easiest way to spot, learn about, and record the historic Ordnance Survey benchmarks scattered across Great Britain. These engraved marks - used to measure height above sea level before modern surveying - can still be found on older buildings, bridges, churches, and walls all around the country. There are over 500,000 of them listed in the Or…

カテゴリ: Entertainment, Travel

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