Geodetic Benchmark F171

Raymond Hill, Jul 23, 2008

Originally uploaded by CybernautExplorer

Besides waymarking and geocaches, there is another fun little GPS adventure known as benchmark hunting. These are actual metal (usually brass) disks that are permenantly embedded into buildings, cement posts, sidewalks and other structures.

These “geodetic” benchmark disks are cataloged and maintained by the National Geodetic Survey (NGS), a federal agency within the U.S. Department of Commerce. They are used by land surveyors, builders and engineers, map makers, and other professionals who need an accurate point of reference to where they are at that moment. These “benchmarks” can be found through out the United States.

This one here is labeled as F171 and was first embedded in 1934.

Photo Data –
GPS Latitude: N 34° 6′ 46.02″
GPS Longitude: W 118° 9′ 1.02″
34.112783, -118.150283

Published in: on July 23, 2008 at 8:38 pm  Leave a Comment  
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