![Geodetic Survey Markers? What is the verdict on these little guys? We have a few of these located in our National Historic District. : r/NianticWayfarer Geodetic Survey Markers? What is the verdict on these little guys? We have a few of these located in our National Historic District. : r/NianticWayfarer](https://preview.redd.it/oxfvsftdlzb41.jpg?auto=webp&s=8f820432938c5f857a7629329e6422cf1f0d57ce)
Geodetic Survey Markers? What is the verdict on these little guys? We have a few of these located in our National Historic District. : r/NianticWayfarer
![Terminology: Brass Cap vs. Brass Disk – Surveying & Geomatics – Community Forums for Land Surveying & Geomatics Terminology: Brass Cap vs. Brass Disk – Surveying & Geomatics – Community Forums for Land Surveying & Geomatics](https://surveyorconnect.com/wp-content/uploads/converted_files/398014=6709-capdisk.jpg)
Terminology: Brass Cap vs. Brass Disk – Surveying & Geomatics – Community Forums for Land Surveying & Geomatics
![Mystery WMATA/Metro survey markers: Can any intrepid city planners or engineers explain what these discs are (or were) used for? I seem them all over the place, even sometimes away from Metro Mystery WMATA/Metro survey markers: Can any intrepid city planners or engineers explain what these discs are (or were) used for? I seem them all over the place, even sometimes away from Metro](https://preview.redd.it/mystery-wmata-metro-survey-markers-can-any-intrepid-city-v0-vfk6bqll529a1.png?width=640&crop=smart&auto=webp&s=260d97ff8557d410e7cf91b4cf2fdf257fa070f1)