Talk:Ebright Azimuth

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Coordinates

The coordinates shown given are taken from the NGS datasheet. Careful examination of the Wilmington North topographic map shows that this location is within Deleware. However Google Maps shows the state boarder to be farther south than is shown on the topo map. --DRoll (talk) 04:14, 18 December 2008 (UTC)[reply]

Finding the azimuth mark

A National Geodetic Survey benchmark usually has associated reference marks and an azimuth mark. The azimuth mark marks the state high point and not the referencing mark its self. The coordinates shown on the benchmark datasheet are not those of the azimuth mark. I cannot find accurate coordinates for the azimuth mark. I used the coordinates given on Summitpost.org page which includes a photograph of the azimuth disk located adjacent to the sidewalk alongside Ebright Road at a point where the sidewalk has been cut away. These coordinates are only approximate. The monument sign has been moved to the same side of the street. The Geocaching.com page for the benchmark can be mined for more information and there are several links to images of the azimuth disk. –droll [chat] 23:16, 6 November 2012 (UTC)[reply]

I think that the old coordinates were correct, and the new ones are not. When you look at the satellite image in Google maps for the old coordinates, it matches the location of the yellow and blue marker sign, on Ebright Road. The new coordinates are off into the mobile home park, away from Ebright Road. I think we should revert. —hike395 (talk) 00:14, 7 November 2012 (UTC)[reply]

The Datasheet makes it clear that the location of the azimuth mark is not the same as that of the benchmark documented in the datasheet. In my experience azimuth marks can be some distance from the benchmark. You should also read the Summitpost and Geocaching pages mentioned above. –droll [chat] 19:49, 7 November 2012 (UTC)[reply]

I changed the coordinates again. It should be noted that the sign is no longer at the location shown in the images on the page. See Summitpost. It was moved to the same side of the road as the azimuth mark. The datasheet says the marks is:

 JU3626'AZIMUTH MARK NO. 1 IS A STANDARD US COAST AND GEODETIC SURVEY (NOW
 JU3626'NOS) DISK STAMPED---EBRIGHT 1959---SET INTO THE TOP OF A ROUND
 JU3626'CONCRETE MONUMENT 30 CM (12 INCHES) IN DIAMETER FLUSH WITH THE GROUND
 JU3626'LOCATED 45.7 METERS (150 FEET) NNE FROM A LOOKOUT TOWER, 6.4 METERS
 JU3626'(21 FEET) W FROM THE CENTER OF EBRIGHT ROAD, 14.6 METERS (48 FEET) N
 JU3626'FROM THE CENTER OF A PAVED ROAD, 3.0 METERS (10 FEET) S FROM A
 JU3626'POWERLINE POLE NUMBERED 77, AND 0.46 METER (1.5 FEET) E FROM A
 JU3626'WITNESS POST.

See these images:

Acme.com satellite image.

Google street view image

Image from Summitpost

In my opinion these sources document the coordinates I added very well. –droll [chat] 20:51, 7 November 2012 (UTC)[reply]

The new coordinates you've added look much better than the previous ones --- they match the description in the datasheet. I think this is on the correct side of the original research rule -- you're summarizing what NGS says into a single coordinate value, not extrapolating beyond what they say. So, I'm happy. Thanks! —hike395 (talk) 04:06, 8 November 2012 (UTC)[reply]

Contrary to what many people believe

who?, the folks in the trailer park?

Fixed —hike395 (talk) 15:44, 20 December 2014 (UTC)[reply]