{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "Display and describe known control points in Gresham\nSee FGDC metadata for more detailed info.", "description": "

Surveyed elevation Points<\/SPAN><\/P>

Monument is typically a standard City of Gresham Control Monument, being a 2 inch bronze disk with raised datum point (Berntsen Model CD2LB), Stamped \u201cCity of Gresham Control Do Not Disturb\u201d.<\/SPAN><\/P>

Vertical: NGVD29 US Survey Feet<\/SPAN><\/SPAN><\/P>

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*May 2014- update<\/SPAN><\/P>

GPS receivers are TOPCON HIPER+, static L1 L2<\/SPAN><\/SPAN><\/P>

Vector reduction performed by TOPCON Tools Software, v 8<\/SPAN><\/SPAN><\/P>

Least Squares adjustment performed by STAR*NET Software, v 7.1<\/SPAN><\/SPAN><\/P>

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Each control point was occupied for a minimum of one hour, on each of two different days. The values established on the points were constrained to a minimum of three City of Gresham primary control points.<\/SPAN><\/SPAN><\/P>

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<\/P><\/DIV><\/DIV><\/DIV>", "summary": "Display and describe known control points in Gresham\nSee FGDC metadata for more detailed info.", "title": "Control Points", "tags": [ "Benchmark", "Elevation", "Surveyor", "Monument", "Horizontal", "Vertical", "Control" ], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 150000000, "maxScale": 5000, "spatialReference": "", "accessInformation": "Gresham GIS Team", "licenseInfo": "

none<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>" }