Author Topic: Strange Marker  (Read 400 times)

Offline Editor

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Strange Marker
« on: October 02, 2017, 09:59:07 PM »
So who knows what this is?  Where have you seen it?

More to come...

« Last Edit: October 02, 2017, 10:00:53 PM by Editor »



Offline BLeafe

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Re: Strange Marker
« Reply #1 on: October 03, 2017, 12:42:41 AM »
You mean this? They're all over the place!

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Offline Editor

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Re: Strange Marker
« Reply #2 on: October 03, 2017, 10:28:30 AM »
Geodetic control survey points support the production of consistent and spatial accurate data for surveying and mapping. Permanent geodetic monuments provide a consistent coordinate system and serve as the basis for computing lengths and distances between relative positions.

See also: Work of the NJ Geodetic Control Survey

The full "station" list is here: http://www.state.nj.us/dep/njgs/enviroed/oldpubs/bulletin48.pdf (Hackensack is about midway through the document).

It would interesting to know how many are remaining.  Benchmark hunting anyone? 

Offline Homer Jones

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Re: Strange Marker
« Reply #3 on: October 03, 2017, 10:43:41 AM »
Surveyors use these benchmarks as reference points when doing land surveys.

Offline irons35

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Re: Strange Marker
« Reply #4 on: October 03, 2017, 09:22:19 PM »
there's one in the railroad abutment on First St, east side of the street, embedded in the stonework.