A Different Type Of Metal Detecting
Benchmark Hunting is a different type of metal detecting, it doesn't involve prospecting for old coins and relics with your metal detector, nor does it involve swinging your metal detector for gold nuggets. Benchmark hunting is a hobby that involves finding, well benchmarks, with the aid of a GPS system and a metal detector.
So, what is a benchmark? A benchmark is a marker put in place at various locations thought the United States, to aid in land surveying, civil engineering and mapping activities. Benchmarks are usually small metal disks, but ...
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